198580316903 has 2 divisors, whose sum is σ = 198580316904. Its totient is φ = 198580316902.

The previous prime is 198580316827. The next prime is 198580316917. The reversal of 198580316903 is 309613085891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198580316903 - 2²² = 198576122599 is a prime.

It is a super-2 number, since 2×198580316903² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198580316503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99290158451 + 99290158452.

It is an arithmetic number, because the mean of its divisors is an integer number (99290158452).

Almost surely, 2^198580316903 is an apocalyptic number.

198580316903 is a deficient number, since it is larger than the sum of its proper divisors (1).

198580316903 is an equidigital number, since it uses as much as digits as its factorization.

198580316903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 198580316903 in words is "one hundred ninety-eight billion, five hundred eighty million, three hundred sixteen thousand, nine hundred three".