968191811 has 2 divisors, whose sum is σ = 968191812. Its totient is φ = 968191810.

The previous prime is 968191771. The next prime is 968191813. The reversal of 968191811 is 118191869.

It is a strong prime.

It is an emirp because it is prime and its reverse (118191869) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 968191811 - 2¹⁸ = 967929667 is a prime.

Together with 968191813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (968191813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484095905 + 484095906.

It is an arithmetic number, because the mean of its divisors is an integer number (484095906).

Almost surely, 2^968191811 is an apocalyptic number.

968191811 is a deficient number, since it is larger than the sum of its proper divisors (1).

968191811 is an equidigital number, since it uses as much as digits as its factorization.

968191811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 44.

The square root of 968191811 is about 31115.7807390398. The cubic root of 968191811 is about 989.2828227628.

The spelling of 968191811 in words is "nine hundred sixty-eight million, one hundred ninety-one thousand, eight hundred eleven".