1068315191 has 2 divisors, whose sum is σ = 1068315192. Its totient is φ = 1068315190.

The previous prime is 1068315119. The next prime is 1068315233. The reversal of 1068315191 is 1915138601.

It is a happy number.

Together with previous prime (1068315119) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1068315191 is a prime.

It is a super-2 number, since 2×1068315191² = 2282594694642732962, which contains 22 as substring.

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 (1068315791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534157595 + 534157596.

It is an arithmetic number, because the mean of its divisors is an integer number (534157596).

Almost surely, 2^1068315191 is an apocalyptic number.

1068315191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068315191 is an equidigital number, since it uses as much as digits as its factorization.

1068315191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 1068315191 is about 32685.0912649789. The cubic root of 1068315191 is about 1022.2720054865.

The spelling of 1068315191 in words is "one billion, sixty-eight million, three hundred fifteen thousand, one hundred ninety-one".