18464504448 has 64 divisors (see below), whose sum is σ = 52819149600. Its totient is φ = 5681384448.

The previous prime is 18464504417. The next prime is 18464504503. The reversal of 18464504448 is 84440546481.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 18464504397 and 18464504406.

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, 1844418 + ... + 1854401.

Almost surely, 2^18464504448 is an apocalyptic number.

It is an amenable number.

18464504448 is an abundant number, since it is smaller than the sum of its proper divisors (34354645152).

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

18464504448 is a wasteful number, since it uses less digits than its factorization.

18464504448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698849 (or 3698837 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 48.

The spelling of 18464504448 in words is "eighteen billion, four hundred sixty-four million, five hundred four thousand, four hundred forty-eight".