8160989136 has 80 divisors (see below), whose sum is σ = 22523558400. Its totient is φ = 2538670464.

The previous prime is 8160989071. The next prime is 8160989147. The reversal of 8160989136 is 6319890618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5676 + ... + 127883.

It is an arithmetic number, because the mean of its divisors is an integer number (281544480).

Almost surely, 2^8160989136 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 8160989136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11261779200).

8160989136 is an abundant number, since it is smaller than the sum of its proper divisors (14362569264).

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

8160989136 is a wasteful number, since it uses less digits than its factorization.

8160989136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133656 (or 133650 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 8160989136 is about 90338.1931189682. The cubic root of 8160989136 is about 2013.3267627911.

The spelling of 8160989136 in words is "eight billion, one hundred sixty million, nine hundred eighty-nine thousand, one hundred thirty-six".