961974913 has 2 divisors, whose sum is σ = 961974914. Its totient is φ = 961974912.

The previous prime is 961974907. The next prime is 961974917. The reversal of 961974913 is 319479169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 953142129 + 8832784 = 30873^2 + 2972^2 .

It is an emirp because it is prime and its reverse (319479169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961974913 - 2¹³ = 961966721 is a prime.

It is not a weakly prime, because it can be changed into another prime (961974917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480987456 + 480987457.

It is an arithmetic number, because the mean of its divisors is an integer number (480987457).

Almost surely, 2^961974913 is an apocalyptic number.

It is an amenable number.

961974913 is a deficient number, since it is larger than the sum of its proper divisors (1).

961974913 is an equidigital number, since it uses as much as digits as its factorization.

961974913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 49.

The square root of 961974913 is about 31015.7204172336. The cubic root of 961974913 is about 987.1608322593.

The spelling of 961974913 in words is "nine hundred sixty-one million, nine hundred seventy-four thousand, nine hundred thirteen".