18188234166 has 16 divisors (see below), whose sum is σ = 36458587584. Its totient is φ = 6049058184.

The previous prime is 18188234059. The next prime is 18188234171. The reversal of 18188234166 is 66143288181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3418756 + ... + 3424071.

It is an arithmetic number, because the mean of its divisors is an integer number (2278661724).

Almost surely, 2^18188234166 is an apocalyptic number.

18188234166 is an abundant number, since it is smaller than the sum of its proper divisors (18270353418).

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

18188234166 is a wasteful number, since it uses less digits than its factorization.

18188234166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6843275.

The product of its digits is 442368, while the sum is 48.

The spelling of 18188234166 in words is "eighteen billion, one hundred eighty-eight million, two hundred thirty-four thousand, one hundred sixty-six".