18110972 has 12 divisors (see below), whose sum is σ = 34575576. Its totient is φ = 8232240.

The previous prime is 18110957. The next prime is 18110977. The reversal of 18110972 is 27901181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18110977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205763 + ... + 205850.

It is an arithmetic number, because the mean of its divisors is an integer number (2881298).

Almost surely, 2^18110972 is an apocalyptic number.

It is an amenable number.

18110972 is a deficient number, since it is larger than the sum of its proper divisors (16464604).

18110972 is a wasteful number, since it uses less digits than its factorization.

18110972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411628 (or 411626 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 18110972 is about 4255.6987675351. The cubic root of 18110972 is about 262.6116084736.

It can be divided in two parts, 181109 and 72, that added together give a palindrome (181181).

The spelling of 18110972 in words is "eighteen million, one hundred ten thousand, nine hundred seventy-two".