18444048590 has 16 divisors (see below), whose sum is σ = 36217404720. Its totient is φ = 6706926720.

The previous prime is 18444048577. The next prime is 18444048617. The reversal of 18444048590 is 9584044481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83836475 + ... + 83836694.

It is an arithmetic number, because the mean of its divisors is an integer number (2263587795).

Almost surely, 2^18444048590 is an apocalyptic number.

18444048590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18444048590 is a deficient number, since it is larger than the sum of its proper divisors (17773356130).

18444048590 is a wasteful number, since it uses less digits than its factorization.

18444048590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167673187.

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 18444048590 in words is "eighteen billion, four hundred forty-four million, forty-eight thousand, five hundred ninety".