8889361680 has 80 divisors (see below), whose sum is σ = 27968370624. Its totient is φ = 2335111680.

The previous prime is 8889361529. The next prime is 8889361681. The reversal of 8889361680 is 861639888.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 8889361680.

It is not an unprimeable number, because it can be changed into a prime (8889361681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260331 + ... + 292490.

Almost surely, 2^8889361680 is an apocalyptic number.

8889361680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8889361680 is an abundant number, since it is smaller than the sum of its proper divisors (19079008944).

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

8889361680 is a wasteful number, since it uses less digits than its factorization.

8889361680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552904 (or 552898 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The square root of 8889361680 is about 94283.4114783720. The cubic root of 8889361680 is about 2071.5250634492.

The spelling of 8889361680 in words is "eight billion, eight hundred eighty-nine million, three hundred sixty-one thousand, six hundred eighty".