Q: Is 19,820 a Prime Number?
A: No, 19,820 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 19820 can be evenly divided by 1 2 4 5 10 20 991 1,982 3,964 4,955 9,910 and 19,820, with no remainder.
Since 19,820 cannot be divided by just 1 and 19,820, it is not a prime number.