Q: Is 18,668 a Prime Number?
A: No, 18,668 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 18668 can be evenly divided by 1 2 4 13 26 52 359 718 1,436 4,667 9,334 and 18,668, with no remainder.
Since 18,668 cannot be divided by just 1 and 18,668, it is not a prime number.