18145164 has 12 divisors (see below), whose sum is σ = 42338744. Its totient is φ = 6048384.

The previous prime is 18145163. The next prime is 18145181. The reversal of 18145164 is 46154181.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18145163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756037 + ... + 756060.

Almost surely, 2^18145164 is an apocalyptic number.

It is an amenable number.

18145164 is an abundant number, since it is smaller than the sum of its proper divisors (24193580).

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

18145164 is a wasteful number, since it uses less digits than its factorization.

18145164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512104 (or 1512102 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 18145164 is about 4259.7140749116. The cubic root of 18145164 is about 262.7767674974.

The spelling of 18145164 in words is "eighteen million, one hundred forty-five thousand, one hundred sixty-four".