18473975744 has 56 divisors (see below), whose sum is σ = 42280819680. Its totient is φ = 7844760576.

The previous prime is 18473975713. The next prime is 18473975771. The reversal of 18473975744 is 44757937481.

It is a tau number, because it is divible by the number of its divisors (56).

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, 140327 + ... + 237990.

Almost surely, 2^18473975744 is an apocalyptic number.

18473975744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18473975744 is an abundant number, since it is smaller than the sum of its proper divisors (23806843936).

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

18473975744 is a wasteful number, since it uses less digits than its factorization.

18473975744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378445 (or 378435 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 59.

The spelling of 18473975744 in words is "eighteen billion, four hundred seventy-three million, nine hundred seventy-five thousand, seven hundred forty-four".