18444808 has 16 divisors (see below), whose sum is σ = 34710480. Its totient is φ = 9188688.

The previous prime is 18444791. The next prime is 18444809. The reversal of 18444808 is 80844481.

It is not an unprimeable number, because it can be changed into a prime (18444809) 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, 1810 + ... + 6337.

It is an arithmetic number, because the mean of its divisors is an integer number (2169405).

Almost surely, 2^18444808 is an apocalyptic number.

It is an amenable number.

18444808 is a deficient number, since it is larger than the sum of its proper divisors (16265672).

18444808 is a wasteful number, since it uses less digits than its factorization.

18444808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8436 (or 8432 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 37.

The square root of 18444808 is about 4294.7419014418. The cubic root of 18444808 is about 264.2153507626.

The spelling of 18444808 in words is "eighteen million, four hundred forty-four thousand, eight hundred eight".