18008842 has 16 divisors (see below), whose sum is σ = 27552672. Its totient is φ = 8826480.

The previous prime is 18008833. The next prime is 18008843. The reversal of 18008842 is 24880081.

It is not an unprimeable number, because it can be changed into a prime (18008843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25717 + ... + 26407.

It is an arithmetic number, because the mean of its divisors is an integer number (1722042).

Almost surely, 2^18008842 is an apocalyptic number.

18008842 is a deficient number, since it is larger than the sum of its proper divisors (9543830).

18008842 is a wasteful number, since it uses less digits than its factorization.

18008842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 18008842 is about 4243.6825988757. The cubic root of 18008842 is about 262.1170446100.

The spelling of 18008842 in words is "eighteen million, eight thousand, eight hundred forty-two".