18926347912 has 64 divisors (see below), whose sum is σ = 37386178560. Its totient is φ = 8969875200.

The previous prime is 18926347907. The next prime is 18926347927. The reversal of 18926347912 is 21974362981.

It is a self number, because there is not a number n which added to its sum of digits gives 18926347912.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13024978 + ... + 13026430.

It is an arithmetic number, because the mean of its divisors is an integer number (584159040).

Almost surely, 2^18926347912 is an apocalyptic number.

It is an amenable number.

18926347912 is a deficient number, since it is larger than the sum of its proper divisors (18459830648).

18926347912 is a wasteful number, since it uses less digits than its factorization.

18926347912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2530 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The spelling of 18926347912 in words is "eighteen billion, nine hundred twenty-six million, three hundred forty-seven thousand, nine hundred twelve".