9120991068 has 60 divisors (see below), whose sum is σ = 27250375152. Its totient is φ = 2605996800.

The previous prime is 9120991039. The next prime is 9120991081. The reversal of 9120991068 is 8601990219.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2008533 + ... + 2013068.

Almost surely, 2^9120991068 is an apocalyptic number.

It is an amenable number.

9120991068 is an abundant number, since it is smaller than the sum of its proper divisors (18129384084).

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

9120991068 is a wasteful number, since it uses less digits than its factorization.

9120991068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021624 (or 4021613 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 9120991068 is about 95503.8798583597. The cubic root of 9120991068 is about 2089.3635316905.

The spelling of 9120991068 in words is "nine billion, one hundred twenty million, nine hundred ninety-one thousand, sixty-eight".