961813579 has 2 divisors, whose sum is σ = 961813580. Its totient is φ = 961813578.

The previous prime is 961813561. The next prime is 961813591. The reversal of 961813579 is 975318169.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 961813579 - 2²¹ = 959716427 is a prime.

It is not a weakly prime, because it can be changed into another prime (961813519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480906789 + 480906790.

It is an arithmetic number, because the mean of its divisors is an integer number (480906790).

Almost surely, 2^961813579 is an apocalyptic number.

961813579 is a deficient number, since it is larger than the sum of its proper divisors (1).

961813579 is an equidigital number, since it uses as much as digits as its factorization.

961813579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 49.

The square root of 961813579 is about 31013.1194658003. The cubic root of 961813579 is about 987.1056431867.

The spelling of 961813579 in words is "nine hundred sixty-one million, eight hundred thirteen thousand, five hundred seventy-nine".