8991830080 has 56 divisors (see below), whose sum is σ = 21501567360. Its totient is φ = 3581652480.

The previous prime is 8991830069. The next prime is 8991830087. The reversal of 8991830080 is 800381998.

It is a self number, because there is not a number n which added to its sum of digits gives 8991830080.

It is not an unprimeable number, because it can be changed into a prime (8991830087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17695 + ... + 135265.

It is an arithmetic number, because the mean of its divisors is an integer number (383956560).

Almost surely, 2^8991830080 is an apocalyptic number.

8991830080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8991830080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10750783680).

8991830080 is an abundant number, since it is smaller than the sum of its proper divisors (12509737280).

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

8991830080 is a wasteful number, since it uses less digits than its factorization.

8991830080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117827 (or 117817 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 8991830080 is about 94825.2607694806. The cubic root of 8991830080 is about 2079.4542207087.

The spelling of 8991830080 in words is "eight billion, nine hundred ninety-one million, eight hundred thirty thousand, eighty".