18488642304 has 144 divisors (see below), whose sum is σ = 53910581760. Its totient is φ = 5578567680.

The previous prime is 18488642287. The next prime is 18488642363. The reversal of 18488642304 is 40324688481.

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

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, 2014494 + ... + 2023650.

It is an arithmetic number, because the mean of its divisors is an integer number (374379040).

Almost surely, 2^18488642304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18488642304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26955290880).

18488642304 is an abundant number, since it is smaller than the sum of its proper divisors (35421939456).

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

18488642304 is a wasteful number, since it uses less digits than its factorization.

18488642304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426 (or 9412 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 48.

The spelling of 18488642304 in words is "eighteen billion, four hundred eighty-eight million, six hundred forty-two thousand, three hundred four".