18112434 has 16 divisors (see below), whose sum is σ = 38131680. Its totient is φ = 5719680.

The previous prime is 18112399. The next prime is 18112441. The reversal of 18112434 is 43421181.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 79327 + ... + 79554.

It is an arithmetic number, because the mean of its divisors is an integer number (2383230).

Almost surely, 2^18112434 is an apocalyptic number.

18112434 is an abundant number, since it is smaller than the sum of its proper divisors (20019246).

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

18112434 is a wasteful number, since it uses less digits than its factorization.

18112434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158905.

The product of its digits is 768, while the sum is 24.

The square root of 18112434 is about 4255.8705337451. The cubic root of 18112434 is about 262.6186746845.

The spelling of 18112434 in words is "eighteen million, one hundred twelve thousand, four hundred thirty-four".