18740444580 has 192 divisors, whose sum is σ = 68496825600. Its totient is φ = 4193648640.

The previous prime is 18740444563. The next prime is 18740444627. The reversal of 18740444580 is 8544404781.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44125 + ... + 198564.

It is an arithmetic number, because the mean of its divisors is an integer number (356754300).

Almost surely, 2^18740444580 is an apocalyptic number.

18740444580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18740444580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34248412800).

18740444580 is an abundant number, since it is smaller than the sum of its proper divisors (49756381020).

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

18740444580 is a wasteful number, since it uses less digits than its factorization.

18740444580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242731 (or 242723 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 45.

The spelling of 18740444580 in words is "eighteen billion, seven hundred forty million, four hundred forty-four thousand, five hundred eighty".