18758894971716 has 27 divisors (see below), whose sum is σ = 47418383534431. Its totient is φ = 6252956328264.

The previous prime is 18758894971709. The next prime is 18758894971799. The reversal of 18758894971716 is 61717949885781.

The square root of 18758894971716 is 4331154.

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

18758894971716 is a `hidden beast` number, since 1 + 8 + 7 + 58 + 8 + 9 + 497 + 1 + 71 + 6 = 666.

It is a super-2 number, since 2×18758894971716² (a number of 27 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, 25625995 + ... + 26347853.

Almost surely, 2^{18758894971716} is an apocalyptic number.

18758894971716 is the 4331154-th square number.

It is an amenable number.

18758894971716 is an abundant number, since it is smaller than the sum of its proper divisors (28659488562715).

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

18758894971716 is an frugal number, since it uses more digits than its factorization.

18758894971716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443728 (or 721864 counting only the distinct ones).

The product of its digits is 1706987520, while the sum is 81.

The spelling of 18758894971716 in words is "eighteen trillion, seven hundred fifty-eight billion, eight hundred ninety-four million, nine hundred seventy-one thousand, seven hundred sixteen".