18980118 has 24 divisors (see below), whose sum is σ = 41297256. Its totient is φ = 6300000.

The previous prime is 18980113. The next prime is 18980141. The reversal of 18980118 is 81108981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18980113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2418 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (1720719).

Almost surely, 2^18980118 is an apocalyptic number.

18980118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18980118 is an abundant number, since it is smaller than the sum of its proper divisors (22317138).

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

18980118 is a wasteful number, since it uses less digits than its factorization.

18980118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460 (or 4457 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 36.

The square root of 18980118 is about 4356.6177247952. The cubic root of 18980118 is about 266.7470566658.

The spelling of 18980118 in words is "eighteen million, nine hundred eighty thousand, one hundred eighteen".