181068972484 has 27 divisors (see below), whose sum is σ = 319406179687. Its totient is φ = 89815779584.

The previous prime is 181068972451. The next prime is 181068972521. The reversal of 181068972484 is 484279860181.

The square root of 181068972484 is 425522.

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

It can be written as a sum of positive squares in 4 ways, for example, as 24062834884 + 157006137600 = 155122^2 + 396240^2 .

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, 116592252 + ... + 116593804.

Almost surely, 2^181068972484 is an apocalyptic number.

181068972484 is the 425522-nd square number.

It is an amenable number.

181068972484 is a deficient number, since it is larger than the sum of its proper divisors (138337207203).

181068972484 is an frugal number, since it uses more digits than its factorization.

181068972484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 181068972484 in words is "one hundred eighty-one billion, sixty-eight million, nine hundred seventy-two thousand, four hundred eighty-four".