Q: Is 18,945 a Prime Number?
A: No, 18,945 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 18945 can be evenly divided by 1 3 5 9 15 45 421 1,263 2,105 3,789 6,315 and 18,945, with no remainder.
Since 18,945 cannot be divided by just 1 and 18,945, it is not a prime number.