198303685904 has 30 divisors (see below), whose sum is σ = 389548854666. Its totient is φ = 97793556480.

The previous prime is 198303685871. The next prime is 198303685933. The reversal of 198303685904 is 409586303891.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12152857600 + 186150828304 = 110240^2 + 431452^2 .

It is a super-2 number, since 2×198303685904² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198303685904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1077617 + ... + 1248144.

Almost surely, 2^198303685904 is an apocalyptic number.

It is an amenable number.

198303685904 is a deficient number, since it is larger than the sum of its proper divisors (191245168762).

198303685904 is an equidigital number, since it uses as much as digits as its factorization.

198303685904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325915 (or 2325836 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 198303685904 in words is "one hundred ninety-eight billion, three hundred three million, six hundred eighty-five thousand, nine hundred four".