18165111828 has 96 divisors (see below), whose sum is σ = 43849935360. Its totient is φ = 5849088000.

The previous prime is 18165111803. The next prime is 18165111851. The reversal of 18165111828 is 82811156181.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18165111828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28338388 + ... + 28339028.

It is an arithmetic number, because the mean of its divisors is an integer number (456770160).

Almost surely, 2^18165111828 is an apocalyptic number.

It is an amenable number.

18165111828 is an abundant number, since it is smaller than the sum of its proper divisors (25684823532).

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

18165111828 is a wasteful number, since it uses less digits than its factorization.

18165111828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1167 counting only the distinct ones).

The product of its digits is 30720, while the sum is 42.

The spelling of 18165111828 in words is "eighteen billion, one hundred sixty-five million, one hundred eleven thousand, eight hundred twenty-eight".