18317408166 has 48 divisors (see below), whose sum is σ = 44234002800. Its totient is φ = 5444181504.

The previous prime is 18317408159. The next prime is 18317408167. The reversal of 18317408166 is 66180471381.

18317408166 is a `hidden beast` number, since 1 + 83 + 1 + 7 + 408 + 166 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18317408167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1569471 + ... + 1581098.

It is an arithmetic number, because the mean of its divisors is an integer number (921541725).

Almost surely, 2^18317408166 is an apocalyptic number.

18317408166 is an abundant number, since it is smaller than the sum of its proper divisors (25916594634).

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

18317408166 is a wasteful number, since it uses less digits than its factorization.

18317408166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150613 (or 3150610 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 18317408166 in words is "eighteen billion, three hundred seventeen million, four hundred eight thousand, one hundred sixty-six".