18572438748 has 24 divisors (see below), whose sum is σ = 44506926352. Its totient is φ = 6023493504.

The previous prime is 18572438747. The next prime is 18572438771. The reversal of 18572438748 is 84783427581.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18572438741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20914465 + ... + 20915352.

Almost surely, 2^18572438748 is an apocalyptic number.

It is an amenable number.

18572438748 is an abundant number, since it is smaller than the sum of its proper divisors (25934487604).

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

18572438748 is a wasteful number, since it uses less digits than its factorization.

18572438748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41829861 (or 41829859 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 57.

The spelling of 18572438748 in words is "eighteen billion, five hundred seventy-two million, four hundred thirty-eight thousand, seven hundred forty-eight".