264931613 has 2 divisors, whose sum is σ = 264931614. Its totient is φ = 264931612.

The previous prime is 264931591. The next prime is 264931631. The reversal of 264931613 is 316139462.

It is a happy number.

Together with next prime (264931631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159314884 + 105616729 = 12622^2 + 10277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264931613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264931633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132465806 + 132465807.

It is an arithmetic number, because the mean of its divisors is an integer number (132465807).

Almost surely, 2^264931613 is an apocalyptic number.

It is an amenable number.

264931613 is a deficient number, since it is larger than the sum of its proper divisors (1).

264931613 is an equidigital number, since it uses as much as digits as its factorization.

264931613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 264931613 is about 16276.7199705592. The cubic root of 264931613 is about 642.2605712063.

The spelling of 264931613 in words is "two hundred sixty-four million, nine hundred thirty-one thousand, six hundred thirteen".