9113880091 has 2 divisors, whose sum is σ = 9113880092. Its totient is φ = 9113880090.

The previous prime is 9113880089. The next prime is 9113880101. The reversal of 9113880091 is 1900883119.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1900883119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9113880091 - 2¹ = 9113880089 is a prime.

Together with 9113880089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9113880491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4556940045 + 4556940046.

It is an arithmetic number, because the mean of its divisors is an integer number (4556940046).

Almost surely, 2^9113880091 is an apocalyptic number.

9113880091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9113880091 is an equidigital number, since it uses as much as digits as its factorization.

9113880091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 9113880091 is about 95466.6438658027. The cubic root of 9113880091 is about 2088.8204153169.

The spelling of 9113880091 in words is "nine billion, one hundred thirteen million, eight hundred eighty thousand, ninety-one".