18040975172 has 48 divisors (see below), whose sum is σ = 34657217280. Its totient is φ = 8149293600.

The previous prime is 18040975153. The next prime is 18040975189. The reversal of 18040975172 is 27157904081.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9459443 + ... + 9461349.

It is an arithmetic number, because the mean of its divisors is an integer number (722025360).

Almost surely, 2^18040975172 is an apocalyptic number.

It is an amenable number.

18040975172 is a deficient number, since it is larger than the sum of its proper divisors (16616242108).

18040975172 is a wasteful number, since it uses less digits than its factorization.

18040975172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152 (or 3150 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 18040975172 in words is "eighteen billion, forty million, nine hundred seventy-five thousand, one hundred seventy-two".