18244918 has 8 divisors (see below), whose sum is σ = 28035000. Its totient is φ = 8899920.

The previous prime is 18244909. The next prime is 18244931. The reversal of 18244918 is 81944281.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111168 + ... + 111331.

It is an arithmetic number, because the mean of its divisors is an integer number (3504375).

Almost surely, 2^18244918 is an apocalyptic number.

18244918 is a deficient number, since it is larger than the sum of its proper divisors (9790082).

18244918 is a wasteful number, since it uses less digits than its factorization.

18244918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222542.

The product of its digits is 18432, while the sum is 37.

The square root of 18244918 is about 4271.4070281349. The cubic root of 18244918 is about 263.2574308116.

The spelling of 18244918 in words is "eighteen million, two hundred forty-four thousand, nine hundred eighteen".