Q: Is 1,638 a Composite Number?
A: Yes, 1,638 is a composite number.
The number 1,638 can be evenly divided by 1 2 3 6 7 9 13 14 18 21 26 39 42 63 78 91 117 126 182 234 273 546 819 and 1,638, with no remainder.
Since 1,638 cannot be divided by just 1 and 1,638, it is a composite number.