9128522881 has 2 divisors, whose sum is σ = 9128522882. Its totient is φ = 9128522880.

The previous prime is 9128522873. The next prime is 9128522959. The reversal of 9128522881 is 1882258219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8387812225 + 740710656 = 91585^2 + 27216^2 .

It is an emirp because it is prime and its reverse (1882258219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9128522881 - 2³ = 9128522873 is a prime.

It is a super-2 number, since 2×9128522881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9128522281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4564261440 + 4564261441.

It is an arithmetic number, because the mean of its divisors is an integer number (4564261441).

Almost surely, 2^9128522881 is an apocalyptic number.

It is an amenable number.

9128522881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9128522881 is an equidigital number, since it uses as much as digits as its factorization.

9128522881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 46.

The square root of 9128522881 is about 95543.3036952355. The cubic root of 9128522881 is about 2089.9384825799.

The spelling of 9128522881 in words is "nine billion, one hundred twenty-eight million, five hundred twenty-two thousand, eight hundred eighty-one".