18338118 has 8 divisors (see below), whose sum is σ = 36676248. Its totient is φ = 6112704.

The previous prime is 18338113. The next prime is 18338129. The reversal of 18338118 is 81183381.

It is a sphenic number, since it is the product of 3 distinct primes.

18338118 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18338113) 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, 1528171 + ... + 1528182.

It is an arithmetic number, because the mean of its divisors is an integer number (4584531).

Almost surely, 2^18338118 is an apocalyptic number.

18338118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18338118 is a wasteful number, since it uses less digits than its factorization.

18338118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3056358.

The product of its digits is 4608, while the sum is 33.

The square root of 18338118 is about 4282.3028851308. The cubic root of 18338118 is about 263.7049331892.

The spelling of 18338118 in words is "eighteen million, three hundred thirty-eight thousand, one hundred eighteen".