18979204776 has 32 divisors (see below), whose sum is σ = 54226299840. Its totient is φ = 5422629888.

The previous prime is 18979204729. The next prime is 18979204793. The reversal of 18979204776 is 67740297981.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56485561 + ... + 56485896.

It is an arithmetic number, because the mean of its divisors is an integer number (1694571870).

Almost surely, 2^18979204776 is an apocalyptic number.

It is an amenable number.

18979204776 is an abundant number, since it is smaller than the sum of its proper divisors (35247095064).

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

18979204776 is a wasteful number, since it uses less digits than its factorization.

18979204776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112971473 (or 112971469 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 60.

The spelling of 18979204776 in words is "eighteen billion, nine hundred seventy-nine million, two hundred four thousand, seven hundred seventy-six".