198757255684 has 45 divisors (see below), whose sum is σ = 377095510547. Its totient is φ = 91664569776.

The previous prime is 198757255661. The next prime is 198757255693. The reversal of 198757255684 is 486552757891.

The square root of 198757255684 is 445822.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 98547022084 + 100210233600 = 313922^2 + 316560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 150687177 + ... + 150688495.

Almost surely, 2^198757255684 is an apocalyptic number.

198757255684 is the 445822-nd square number.

It is an amenable number.

198757255684 is a deficient number, since it is larger than the sum of its proper divisors (178338254863).

198757255684 is an frugal number, since it uses more digits than its factorization.

198757255684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694 (or 1334 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 67.

The spelling of 198757255684 in words is "one hundred ninety-eight billion, seven hundred fifty-seven million, two hundred fifty-five thousand, six hundred eighty-four".