18134868 has 12 divisors (see below), whose sum is σ = 42314720. Its totient is φ = 6044952.

The previous prime is 18134867. The next prime is 18134927. The reversal of 18134868 is 86843181.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18134867) 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, 755608 + ... + 755631.

Almost surely, 2^18134868 is an apocalyptic number.

It is an amenable number.

18134868 is an abundant number, since it is smaller than the sum of its proper divisors (24179852).

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

18134868 is a wasteful number, since it uses less digits than its factorization.

18134868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511246 (or 1511244 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 18134868 is about 4258.5053716063. The cubic root of 18134868 is about 262.7270561530.

The spelling of 18134868 in words is "eighteen million, one hundred thirty-four thousand, eight hundred sixty-eight".