18110985 has 16 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 9641600.

The previous prime is 18110977. The next prime is 18111007. The reversal of 18110985 is 58901181.

It is not a de Polignac number, because 18110985 - 2³ = 18110977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15160 + ... + 16310.

It is an arithmetic number, because the mean of its divisors is an integer number (1814400).

Almost surely, 2^18110985 is an apocalyptic number.

18110985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18110985 is a deficient number, since it is larger than the sum of its proper divisors (10919415).

18110985 is a wasteful number, since it uses less digits than its factorization.

18110985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208.

The product of its (nonzero) digits is 2880, while the sum is 33.

The square root of 18110985 is about 4255.7002948986. The cubic root of 18110985 is about 262.6116713075.

The spelling of 18110985 in words is "eighteen million, one hundred ten thousand, nine hundred eighty-five".