913665943 has 2 divisors, whose sum is σ = 913665944. Its totient is φ = 913665942.

The previous prime is 913665923. The next prime is 913665971. The reversal of 913665943 is 349566319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 913665943 - 2²⁵ = 880111511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 913665893 and 913665902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913665913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456832971 + 456832972.

It is an arithmetic number, because the mean of its divisors is an integer number (456832972).

Almost surely, 2^913665943 is an apocalyptic number.

913665943 is a deficient number, since it is larger than the sum of its proper divisors (1).

913665943 is an equidigital number, since it uses as much as digits as its factorization.

913665943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 46.

The square root of 913665943 is about 30226.9075990251. The cubic root of 913665943 is about 970.3516431525.

The spelling of 913665943 in words is "nine hundred thirteen million, six hundred sixty-five thousand, nine hundred forty-three".