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Q: Is 18 a Catalan Number?
A: No, the number 18 is not a Catalan number.
Here are the next few Catalan numbers
42
132
429
1,430
4,862
16,796
Are any of the surrounding numbers a Catalan number?
Let's take a look and see...
Number
16
17
19
20
Catalan?
no
no
no
no
Explore more about the number 18:
General
Factoring
Calculations
Misc
General Questions
Is 18 a prime number?
Is 18 a composite number?
Is 18 an even number?
Is 18 an odd number?
Is 18 a perfect square?
Is 18 a palindrome?
Is 18 a Fibonacci number?
How is the number 18 written in scientific notation?
What is the absolute value of the number 18?
What is the negative version of the number 18?
What is the place value chart for the number 18?
What is the digital root of the number 18?
How many digits is in the number 18?
How is 18 written in roman numerals?
Factoring Questions
What are the factors or divisors of the number 18?
What are the prime factors of the number 18?
What is the total number of factors of the number 18?
What is the total number of prime factors of the number 18?
What is the sum of all factors of the number 18 including 18?
What is the sum of all factors of the number 18 excluding 18?
What are the factor combinations of the number 18?
What is the prime factorization of the number 18?
Calculation Questions
What are the answers to common fractions of the number 18?
What is 18 squared (18
2
)?
What is 18 x Pi?
What is log
e
(18)?
What is log
2
(18)?
What is log
10
(18)?
Miscellaneous Questions
How much data will 18 bytes hold in different storage units?
What is 18 in other base number systems?
How is 18 spelled out in other languages or countries?
How is 18 formatted in other languages or countries?
How is 18 formatted as currency in different languages or countries?
What are the different hash algorithm outputs for 18?
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