18167166 has 48 divisors (see below), whose sum is σ = 42260400. Its totient is φ = 5842368.

The previous prime is 18167131. The next prime is 18167167. The reversal of 18167166 is 66176181.

It is a hoax number, since the sum of its digits (36) 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 18167166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18167167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13450 + ... + 14738.

It is an arithmetic number, because the mean of its divisors is an integer number (880425).

Almost surely, 2^18167166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18167166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21130200).

18167166 is an abundant number, since it is smaller than the sum of its proper divisors (24093234).

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

18167166 is a wasteful number, since it uses less digits than its factorization.

18167166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1323 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 18167166 is about 4262.2958602143. The cubic root of 18167166 is about 262.8829349804.

The spelling of 18167166 in words is "eighteen million, one hundred sixty-seven thousand, one hundred sixty-six".