18927665332 has 24 divisors (see below), whose sum is σ = 33210475200. Its totient is φ = 9438985920.

The previous prime is 18927665321. The next prime is 18927665357. The reversal of 18927665332 is 23356672981.

It is a self number, because there is not a number n which added to its sum of digits gives 18927665332.

It is a congruent number.

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, 4372153 + ... + 4376479.

It is an arithmetic number, because the mean of its divisors is an integer number (1383769800).

Almost surely, 2^18927665332 is an apocalyptic number.

It is an amenable number.

18927665332 is a deficient number, since it is larger than the sum of its proper divisors (14282809868).

18927665332 is a wasteful number, since it uses less digits than its factorization.

18927665332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951 (or 6949 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The spelling of 18927665332 in words is "eighteen billion, nine hundred twenty-seven million, six hundred sixty-five thousand, three hundred thirty-two".