18083994 has 32 divisors (see below), whose sum is σ = 38301120. Its totient is φ = 5682432.

The previous prime is 18083987. The next prime is 18084013. The reversal of 18083994 is 49938081.

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, 6274 + ... + 8690.

It is an arithmetic number, because the mean of its divisors is an integer number (1196910).

Almost surely, 2^18083994 is an apocalyptic number.

18083994 is an abundant number, since it is smaller than the sum of its proper divisors (20217126).

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

18083994 is a wasteful number, since it uses less digits than its factorization.

18083994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 18083994 is about 4252.5279540527. The cubic root of 18083994 is about 262.4811487596.

The spelling of 18083994 in words is "eighteen million, eighty-three thousand, nine hundred ninety-four".