198355513 has 2 divisors, whose sum is σ = 198355514. Its totient is φ = 198355512.

The previous prime is 198355477. The next prime is 198355529. The reversal of 198355513 is 315553891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197458704 + 896809 = 14052^2 + 947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198355513 is a prime.

It is not a weakly prime, because it can be changed into another prime (198355543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99177756 + 99177757.

It is an arithmetic number, because the mean of its divisors is an integer number (99177757).

Almost surely, 2^198355513 is an apocalyptic number.

It is an amenable number.

198355513 is a deficient number, since it is larger than the sum of its proper divisors (1).

198355513 is an equidigital number, since it uses as much as digits as its factorization.

198355513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 40.

The square root of 198355513 is about 14083.8742184102. The cubic root of 198355513 is about 583.1962980055.

The spelling of 198355513 in words is "one hundred ninety-eight million, three hundred fifty-five thousand, five hundred thirteen".