18934984776 has 16 divisors (see below), whose sum is σ = 47337462000. Its totient is φ = 6311661584.

The previous prime is 18934984763. The next prime is 18934984847. The reversal of 18934984776 is 67748943981.

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, 394478826 + ... + 394478873.

It is an arithmetic number, because the mean of its divisors is an integer number (2958591375).

Almost surely, 2^18934984776 is an apocalyptic number.

It is an amenable number.

18934984776 is an abundant number, since it is smaller than the sum of its proper divisors (28402477224).

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

18934984776 is a wasteful number, since it uses less digits than its factorization.

18934984776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788957708 (or 788957704 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 66.

The spelling of 18934984776 in words is "eighteen billion, nine hundred thirty-four million, nine hundred eighty-four thousand, seven hundred seventy-six".