18929775032 has 32 divisors (see below), whose sum is σ = 40601877600. Its totient is φ = 8105145984.

The previous prime is 18929775023. The next prime is 18929775089. The reversal of 18929775032 is 23057792981.

It is a happy number.

It is a congruent number.

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, 98243 + ... + 217970.

It is an arithmetic number, because the mean of its divisors is an integer number (1268808675).

Almost surely, 2^18929775032 is an apocalyptic number.

It is an amenable number.

18929775032 is an abundant number, since it is smaller than the sum of its proper divisors (21672102568).

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

18929775032 is a wasteful number, since it uses less digits than its factorization.

18929775032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317295 (or 317291 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 18929775032 in words is "eighteen billion, nine hundred twenty-nine million, seven hundred seventy-five thousand, thirty-two".