18118680 has 32 divisors (see below), whose sum is σ = 54356400. Its totient is φ = 4831616.

The previous prime is 18118669. The next prime is 18118699. The reversal of 18118680 is 8681181.

It is a congruent number.

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, 75375 + ... + 75614.

Almost surely, 2^18118680 is an apocalyptic number.

18118680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18118680 is an abundant number, since it is smaller than the sum of its proper divisors (36237720).

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

18118680 is a wasteful number, since it uses less digits than its factorization.

18118680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151003 (or 150999 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 33.

The square root of 18118680 is about 4256.6042804094. The cubic root of 18118680 is about 262.6488588796.

The spelling of 18118680 in words is "eighteen million, one hundred eighteen thousand, six hundred eighty".