961993057 has 2 divisors, whose sum is σ = 961993058. Its totient is φ = 961993056.

The previous prime is 961993027. The next prime is 961993061. The reversal of 961993057 is 750399169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 929091361 + 32901696 = 30481^2 + 5736^2 .

It is a cyclic number.

It is not a de Polignac number, because 961993057 - 2¹⁹ = 961468769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 961993057.

It is not a weakly prime, because it can be changed into another prime (961993027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480996528 + 480996529.

It is an arithmetic number, because the mean of its divisors is an integer number (480996529).

Almost surely, 2^961993057 is an apocalyptic number.

It is an amenable number.

961993057 is a deficient number, since it is larger than the sum of its proper divisors (1).

961993057 is an equidigital number, since it uses as much as digits as its factorization.

961993057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 459270, while the sum is 49.

The square root of 961993057 is about 31016.0129126875. The cubic root of 961993057 is about 987.1670385658.

The spelling of 961993057 in words is "nine hundred sixty-one million, nine hundred ninety-three thousand, fifty-seven".