180130638724 has 9 divisors (see below), whose sum is σ = 315230103237. Its totient is φ = 90064894944.

The previous prime is 180130638671. The next prime is 180130638757. The reversal of 180130638724 is 427836031081.

The square root of 180130638724 is 424418.

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

It can be written as a sum of positive squares in only one way, i.e., 162959157124 + 17171481600 = 403682^2 + 131040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 742732 + ... + 954940.

Almost surely, 2^180130638724 is an apocalyptic number.

180130638724 is the 424418-th square number.

It is an amenable number.

180130638724 is a deficient number, since it is larger than the sum of its proper divisors (135099464513).

180130638724 is an frugal number, since it uses more digits than its factorization.

180130638724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424422 (or 212211 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 180130638724 in words is "one hundred eighty billion, one hundred thirty million, six hundred thirty-eight thousand, seven hundred twenty-four".