968493557 has 2 divisors, whose sum is σ = 968493558. Its totient is φ = 968493556.

The previous prime is 968493529. The next prime is 968493569. The reversal of 968493557 is 755394869.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902461681 + 66031876 = 30041^2 + 8126^2 .

It is a cyclic number.

It is not a de Polignac number, because 968493557 - 2⁸ = 968493301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (968495557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484246778 + 484246779.

It is an arithmetic number, because the mean of its divisors is an integer number (484246779).

Almost surely, 2^968493557 is an apocalyptic number.

It is an amenable number.

968493557 is a deficient number, since it is larger than the sum of its proper divisors (1).

968493557 is an equidigital number, since it uses as much as digits as its factorization.

968493557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 56.

The square root of 968493557 is about 31120.6291228182. The cubic root of 968493557 is about 989.3855851581.

The spelling of 968493557 in words is "nine hundred sixty-eight million, four hundred ninety-three thousand, five hundred fifty-seven".