18448844 has 12 divisors (see below), whose sum is σ = 33327168. Its totient is φ = 8926800.

The previous prime is 18448841. The next prime is 18448873. The reversal of 18448844 is 44884481.

It is not an unprimeable number, because it can be changed into a prime (18448841) 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, 74267 + ... + 74514.

It is an arithmetic number, because the mean of its divisors is an integer number (2777264).

Almost surely, 2^18448844 is an apocalyptic number.

It is an amenable number.

18448844 is a deficient number, since it is larger than the sum of its proper divisors (14878324).

18448844 is a wasteful number, since it uses less digits than its factorization.

18448844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148816 (or 148814 counting only the distinct ones).

The product of its digits is 131072, while the sum is 41.

The square root of 18448844 is about 4295.2117526380. The cubic root of 18448844 is about 264.2346207814.

The spelling of 18448844 in words is "eighteen million, four hundred forty-eight thousand, eight hundred forty-four".