18108934 has 32 divisors (see below), whose sum is σ = 29509920. Its totient is φ = 8316672.

The previous prime is 18108931. The next prime is 18108943. The reversal of 18108934 is 43980181.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18108934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18108931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132114 + ... + 132250.

It is an arithmetic number, because the mean of its divisors is an integer number (922185).

Almost surely, 2^18108934 is an apocalyptic number.

18108934 is a deficient number, since it is larger than the sum of its proper divisors (11400986).

18108934 is a wasteful number, since it uses less digits than its factorization.

18108934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18108934 is about 4255.4593171595. The cubic root of 18108934 is about 262.6017576765.

The spelling of 18108934 in words is "eighteen million, one hundred eight thousand, nine hundred thirty-four".