Q: Is 18,520 a Prime Number?
A: No, 18,520 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 18520 can be evenly divided by 1 2 4 5 8 10 20 40 463 926 1,852 2,315 3,704 4,630 9,260 and 18,520, with no remainder.
Since 18,520 cannot be divided by just 1 and 18,520, it is not a prime number.