18474090012 has 48 divisors (see below), whose sum is σ = 54738046720. Its totient is φ = 5278311216.

The previous prime is 18474089987. The next prime is 18474090049. The reversal of 18474090012 is 21009047481.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 12217558 + ... + 12219069.

Almost surely, 2^18474090012 is an apocalyptic number.

18474090012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18474090012 is an abundant number, since it is smaller than the sum of its proper divisors (36263956708).

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

18474090012 is a wasteful number, since it uses less digits than its factorization.

18474090012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24436647 (or 24436639 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 18474090012 in words is "eighteen billion, four hundred seventy-four million, ninety thousand, twelve".