913968881 has 4 divisors (see below), whose sum is σ = 1044535872. Its totient is φ = 783401892.

The previous prime is 913968851. The next prime is 913968889. The reversal of 913968881 is 188869319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 913968881 - 2⁶ = 913968817 is a prime.

It is a super-2 number, since 2×913968881² = 1670678230872784322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (913968889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65283485 + ... + 65283498.

It is an arithmetic number, because the mean of its divisors is an integer number (261133968).

Almost surely, 2^913968881 is an apocalyptic number.

It is an amenable number.

913968881 is a deficient number, since it is larger than the sum of its proper divisors (130566991).

913968881 is a wasteful number, since it uses less digits than its factorization.

913968881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130566990.

The product of its digits is 746496, while the sum is 53.

The square root of 913968881 is about 30231.9182487648. The cubic root of 913968881 is about 970.4588755992.

The spelling of 913968881 in words is "nine hundred thirteen million, nine hundred sixty-eight thousand, eight hundred eighty-one".