18008368 has 20 divisors (see below), whose sum is σ = 39875920. Its totient is φ = 7717824.

The previous prime is 18008363. The next prime is 18008377. The reversal of 18008368 is 86380081.

It is not an unprimeable number, because it can be changed into a prime (18008363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80283 + ... + 80506.

It is an arithmetic number, because the mean of its divisors is an integer number (1993796).

Almost surely, 2^18008368 is an apocalyptic number.

It is an amenable number.

18008368 is an abundant number, since it is smaller than the sum of its proper divisors (21867552).

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

18008368 is a wasteful number, since it uses less digits than its factorization.

18008368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160804 (or 160798 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18008368 is about 4243.6267507876. The cubic root of 18008368 is about 262.1147449144.

The spelling of 18008368 in words is "eighteen million, eight thousand, three hundred sixty-eight".