913881607 has 2 divisors, whose sum is σ = 913881608. Its totient is φ = 913881606.

The previous prime is 913881587. The next prime is 913881613. The reversal of 913881607 is 706188319.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913881607 is a prime.

It is a super-2 number, since 2×913881607² = 1670359183225804898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913881697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456940803 + 456940804.

It is an arithmetic number, because the mean of its divisors is an integer number (456940804).

Almost surely, 2^913881607 is an apocalyptic number.

913881607 is a deficient number, since it is larger than the sum of its proper divisors (1).

913881607 is an equidigital number, since it uses as much as digits as its factorization.

913881607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 913881607 is about 30230.4748060628. The cubic root of 913881607 is about 970.4279852244.

The spelling of 913881607 in words is "nine hundred thirteen million, eight hundred eighty-one thousand, six hundred seven".