9120871922 has 6 divisors (see below), whose sum is σ = 13681510479. Its totient is φ = 4560368430.

The previous prime is 9120871861. The next prime is 9120871937. The reversal of 9120871922 is 2291780219.

It can be written as a sum of positive squares in only one way, i.e., 4560435961 + 4560435961 = 67531^2 + 67531^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=67531.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9120871922.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 101297 + ... + 168827.

Almost surely, 2^9120871922 is an apocalyptic number.

9120871922 is a deficient number, since it is larger than the sum of its proper divisors (4560638557).

9120871922 is an frugal number, since it uses more digits than its factorization.

9120871922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135064 (or 67533 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 9120871922 is about 95503.2560806175. The cubic root of 9120871922 is about 2089.3544339806.

The spelling of 9120871922 in words is "nine billion, one hundred twenty million, eight hundred seventy-one thousand, nine hundred twenty-two".