491556792 has 16 divisors (see below), whose sum is σ = 1228892040. Its totient is φ = 163852256.

The previous prime is 491556781. The next prime is 491556827. The reversal of 491556792 is 297655194.

It is a super-2 number, since 2×491556792² = 483256159522662528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10240743 + ... + 10240790.

Almost surely, 2^491556792 is an apocalyptic number.

It is an amenable number.

491556792 is an abundant number, since it is smaller than the sum of its proper divisors (737335248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491556792 is a wasteful number, since it uses less digits than its factorization.

491556792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20481542 (or 20481538 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 491556792 is about 22171.0800819446. The cubic root of 491556792 is about 789.2075544565.

The spelling of 491556792 in words is "four hundred ninety-one million, five hundred fifty-six thousand, seven hundred ninety-two".