18166960 has 40 divisors (see below), whose sum is σ = 48273696. Its totient is φ = 6228480.

The previous prime is 18166943. The next prime is 18166979. The reversal of 18166960 is 6966181.

It is a tau number, because it is divible by the number of its divisors (40).

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, 15661 + ... + 16780.

Almost surely, 2^18166960 is an apocalyptic number.

18166960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18166960 is an abundant number, since it is smaller than the sum of its proper divisors (30106736).

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

18166960 is a wasteful number, since it uses less digits than its factorization.

18166960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32461 (or 32455 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 18166960 is about 4262.2716947656. The cubic root of 18166960 is about 262.8819413547.

The spelling of 18166960 in words is "eighteen million, one hundred sixty-six thousand, nine hundred sixty".