18437672736 has 96 divisors (see below), whose sum is σ = 61458929280. Its totient is φ = 5267904768.

The previous prime is 18437672717. The next prime is 18437672753. The reversal of 18437672736 is 63727673481.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518231 + ... + 1530326.

It is an arithmetic number, because the mean of its divisors is an integer number (640197180).

Almost surely, 2^18437672736 is an apocalyptic number.

18437672736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18437672736 is an abundant number, since it is smaller than the sum of its proper divisors (43021256544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18437672736 is a wasteful number, since it uses less digits than its factorization.

18437672736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048583 (or 3048569 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 18437672736 in words is "eighteen billion, four hundred thirty-seven million, six hundred seventy-two thousand, seven hundred thirty-six".