18579432944 has 10 divisors (see below), whose sum is σ = 35997651360. Its totient is φ = 9289716464.

The previous prime is 18579432943. The next prime is 18579432973. The reversal of 18579432944 is 44923497581.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18579432944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18579432943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580607264 + ... + 580607295.

It is an arithmetic number, because the mean of its divisors is an integer number (3599765136).

Almost surely, 2^18579432944 is an apocalyptic number.

It is an amenable number.

18579432944 is a deficient number, since it is larger than the sum of its proper divisors (17418218416).

18579432944 is a wasteful number, since it uses less digits than its factorization.

18579432944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161214567 (or 1161214561 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 18579432944 in words is "eighteen billion, five hundred seventy-nine million, four hundred thirty-two thousand, nine hundred forty-four".