18389974704 has 40 divisors (see below), whose sum is σ = 47854221360. Its totient is φ = 6085244928.

The previous prime is 18389974697. The next prime is 18389974747. The reversal of 18389974704 is 40747998381.

It is a super-2 number, since 2×18389974704² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1391689 + ... + 1404840.

It is an arithmetic number, because the mean of its divisors is an integer number (1196355534).

Almost surely, 2^18389974704 is an apocalyptic number.

It is an amenable number.

18389974704 is an abundant number, since it is smaller than the sum of its proper divisors (29464246656).

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

18389974704 is a wasteful number, since it uses less digits than its factorization.

18389974704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796677 (or 2796671 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 18389974704 in words is "eighteen billion, three hundred eighty-nine million, nine hundred seventy-four thousand, seven hundred four".