181344815716 has 9 divisors (see below), whose sum is σ = 317354917971. Its totient is φ = 90671982012.

The previous prime is 181344815713. The next prime is 181344815723. The reversal of 181344815716 is 617518443181.

The square root of 181344815716 is 425846.

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

181344815716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 181344815716.

It is not an unprimeable number, because it can be changed into a prime (181344815713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 745231 + ... + 958153.

Almost surely, 2^181344815716 is an apocalyptic number.

181344815716 is the 425846-th square number.

It is an amenable number.

181344815716 is a deficient number, since it is larger than the sum of its proper divisors (136010102255).

181344815716 is an frugal number, since it uses more digits than its factorization.

181344815716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425850 (or 212925 counting only the distinct ones).

The product of its digits is 645120, while the sum is 49.

Multiplying 181344815716 by its sum of digits (49), we get a square (8885895970084 = 2980922²).

The spelling of 181344815716 in words is "one hundred eighty-one billion, three hundred forty-four million, eight hundred fifteen thousand, seven hundred sixteen".