74902931856 has 45 divisors (see below), whose sum is σ = 209633368971. Its totient is φ = 24966549216.

The previous prime is 74902931843. The next prime is 74902931863. The reversal of 74902931856 is 65813920947.

The square root of 74902931856 is 273684.

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

74902931856 is a `hidden beast` number, since 7 + 490 + 2 + 93 + 18 + 56 = 666.

It is a super-2 number, since 2×74902931856² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3272805 + ... + 3295611.

It is a 2-persistent number, because it is pandigital, and so is 2⋅74902931856 = 149805863712, but 3⋅74902931856 = 224708795568 is not.

Almost surely, 2^74902931856 is an apocalyptic number.

74902931856 is the 273684-th square number.

It is an amenable number.

74902931856 is an abundant number, since it is smaller than the sum of its proper divisors (134730437115).

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

74902931856 is an frugal number, since it uses more digits than its factorization.

74902931856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45628 (or 22812 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 74902931856 in words is "seventy-four billion, nine hundred two million, nine hundred thirty-one thousand, eight hundred fifty-six".