8291980980 has 144 divisors (see below), whose sum is σ = 25650665040. Its totient is φ = 2167824384.

The previous prime is 8291980973. The next prime is 8291980993. The reversal of 8291980980 is 890891928.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1154096784 + 7137884196 = 33972^2 + 84486^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1900962 + ... + 1905318.

Almost surely, 2^8291980980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8291980980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12825332520).

8291980980 is an abundant number, since it is smaller than the sum of its proper divisors (17358684060).

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

8291980980 is a wasteful number, since it uses less digits than its factorization.

8291980980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578 (or 4573 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The square root of 8291980980 is about 91060.3150664437. The cubic root of 8291980980 is about 2024.0415912782.

The spelling of 8291980980 in words is "eight billion, two hundred ninety-one million, nine hundred eighty thousand, nine hundred eighty".