18235164 has 12 divisors (see below), whose sum is σ = 42548744. Its totient is φ = 6078384.

The previous prime is 18235163. The next prime is 18235177. The reversal of 18235164 is 46153281.

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

It is a super-2 number, since 2×18235164² = 665042412213792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18235163) 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, 759787 + ... + 759810.

Almost surely, 2^18235164 is an apocalyptic number.

It is an amenable number.

18235164 is an abundant number, since it is smaller than the sum of its proper divisors (24313580).

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

18235164 is a wasteful number, since it uses less digits than its factorization.

18235164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519604 (or 1519602 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 18235164 is about 4270.2650971573. The cubic root of 18235164 is about 263.2105086913.

The spelling of 18235164 in words is "eighteen million, two hundred thirty-five thousand, one hundred sixty-four".