18112918 has 8 divisors (see below), whose sum is σ = 27244512. Its totient is φ = 9031416.

The previous prime is 18112901. The next prime is 18112921. The reversal of 18112918 is 81921181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18112918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11605 + ... + 13072.

It is an arithmetic number, because the mean of its divisors is an integer number (3405564).

Almost surely, 2^18112918 is an apocalyptic number.

18112918 is a deficient number, since it is larger than the sum of its proper divisors (9131594).

18112918 is a wasteful number, since it uses less digits than its factorization.

18112918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25046.

The product of its digits is 1152, while the sum is 31.

The square root of 18112918 is about 4255.9273959973. The cubic root of 18112918 is about 262.6210138935.

The spelling of 18112918 in words is "eighteen million, one hundred twelve thousand, nine hundred eighteen".