18744895744 has 81 divisors (see below), whose sum is σ = 38500422723. Its totient is φ = 9108481536.

The previous prime is 18744895733. The next prime is 18744895781. The reversal of 18744895744 is 44759844781.

It is a happy number.

The square root of 18744895744 is 136912.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×18744895744² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 94195357 + ... + 94195555.

Almost surely, 2^18744895744 is an apocalyptic number.

18744895744 is the 136912-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18744895744

18744895744 is an abundant number, since it is smaller than the sum of its proper divisors (19755526979).

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

18744895744 is an frugal number, since it uses more digits than its factorization.

18744895744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 244 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 61.

The spelling of 18744895744 in words is "eighteen billion, seven hundred forty-four million, eight hundred ninety-five thousand, seven hundred forty-four".