18164168 has 16 divisors (see below), whose sum is σ = 37154160. Its totient is φ = 8256400.

The previous prime is 18164161. The next prime is 18164173. The reversal of 18164168 is 86146181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18164161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103118 + ... + 103293.

It is an arithmetic number, because the mean of its divisors is an integer number (2322135).

Almost surely, 2^18164168 is an apocalyptic number.

It is an amenable number.

18164168 is an abundant number, since it is smaller than the sum of its proper divisors (18989992).

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

18164168 is a wasteful number, since it uses less digits than its factorization.

18164168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206428 (or 206424 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 18164168 is about 4261.9441573066. The cubic root of 18164168 is about 262.8684736091.

The spelling of 18164168 in words is "eighteen million, one hundred sixty-four thousand, one hundred sixty-eight".