961935613 has 2 divisors, whose sum is σ = 961935614. Its totient is φ = 961935612.

The previous prime is 961935581. The next prime is 961935631. The reversal of 961935613 is 316539169.

Together with next prime (961935631) 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., 827885529 + 134050084 = 28773^2 + 11578^2 .

It is a cyclic number.

It is not a de Polignac number, because 961935613 - 2⁵ = 961935581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 961935613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961935113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480967806 + 480967807.

It is an arithmetic number, because the mean of its divisors is an integer number (480967807).

Almost surely, 2^961935613 is an apocalyptic number.

It is an amenable number.

961935613 is a deficient number, since it is larger than the sum of its proper divisors (1).

961935613 is an equidigital number, since it uses as much as digits as its factorization.

961935613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 43.

The square root of 961935613 is about 31015.0868610746. The cubic root of 961935613 is about 987.1473890989.

The spelling of 961935613 in words is "nine hundred sixty-one million, nine hundred thirty-five thousand, six hundred thirteen".