18979470756 has 27 divisors (see below), whose sum is σ = 47977973953. Its totient is φ = 6326214720.

The previous prime is 18979470749. The next prime is 18979470779. The reversal of 18979470756 is 65707497981.

The square root of 18979470756 is 137766.

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

18979470756 is a `hidden beast` number, since 1 + 8 + 97 + 9 + 470 + 75 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13118037156 + 5861433600 = 114534^2 + 76560^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18979470693 and 18979470702.

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, 815116 + ... + 838076.

Almost surely, 2^18979470756 is an apocalyptic number.

18979470756 is the 137766-th square number.

It is an amenable number.

18979470756 is an abundant number, since it is smaller than the sum of its proper divisors (28998503197).

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

18979470756 is an frugal number, since it uses more digits than its factorization.

18979470756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45932 (or 22966 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 18979470756 in words is "eighteen billion, nine hundred seventy-nine million, four hundred seventy thousand, seven hundred fifty-six".