18140164 has 24 divisors (see below), whose sum is σ = 36659840. Its totient is φ = 7693056.

The previous prime is 18140159. The next prime is 18140179. The reversal of 18140164 is 46104181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624 + ... + 6055.

Almost surely, 2^18140164 is an apocalyptic number.

18140164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18140164 is an abundant number, since it is smaller than the sum of its proper divisors (18519676).

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

18140164 is a wasteful number, since it uses less digits than its factorization.

18140164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787 (or 6785 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 18140164 is about 4259.1271406240. The cubic root of 18140164 is about 262.7526287510.

The spelling of 18140164 in words is "eighteen million, one hundred forty thousand, one hundred sixty-four".