9113880521 has 2 divisors, whose sum is σ = 9113880522. Its totient is φ = 9113880520.

The previous prime is 9113880491. The next prime is 9113880539. The reversal of 9113880521 is 1250883119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7948614025 + 1165266496 = 89155^2 + 34136^2 .

It is an emirp because it is prime and its reverse (1250883119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9113880521 - 2¹⁰ = 9113879497 is a prime.

It is a super-3 number, since 3×9113880521³ (a number of 31 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9113883521) by changing a digit.

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 as a sum of consecutive naturals, namely, 4556940260 + 4556940261.

It is an arithmetic number, because the mean of its divisors is an integer number (4556940261).

Almost surely, 2^9113880521 is an apocalyptic number.

It is an amenable number.

9113880521 is a deficient number, since it is larger than the sum of its proper divisors (1).

9113880521 is an equidigital number, since it uses as much as digits as its factorization.

9113880521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 9113880521 is about 95466.6461178982. The cubic root of 9113880521 is about 2088.8204481677.

The spelling of 9113880521 in words is "nine billion, one hundred thirteen million, eight hundred eighty thousand, five hundred twenty-one".