968553191 has 2 divisors, whose sum is σ = 968553192. Its totient is φ = 968553190.

The previous prime is 968553167. The next prime is 968553197. The reversal of 968553191 is 191355869.

It is a strong prime.

It is an emirp because it is prime and its reverse (191355869) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 968553191 - 2²² = 964358887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (968553197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484276595 + 484276596.

It is an arithmetic number, because the mean of its divisors is an integer number (484276596).

Almost surely, 2^968553191 is an apocalyptic number.

968553191 is a deficient number, since it is larger than the sum of its proper divisors (1).

968553191 is an equidigital number, since it uses as much as digits as its factorization.

968553191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 47.

The square root of 968553191 is about 31121.5872185208. The cubic root of 968553191 is about 989.4058915431.

The spelling of 968553191 in words is "nine hundred sixty-eight million, five hundred fifty-three thousand, one hundred ninety-one".