7968936491 has 2 divisors, whose sum is σ = 7968936492. Its totient is φ = 7968936490.

The previous prime is 7968936407. The next prime is 7968936497. The reversal of 7968936491 is 1946398697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7968936491 - 2¹⁴ = 7968920107 is a prime.

It is not a weakly prime, because it can be changed into another prime (7968936497) 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, 3984468245 + 3984468246.

It is an arithmetic number, because the mean of its divisors is an integer number (3984468246).

Almost surely, 2^7968936491 is an apocalyptic number.

7968936491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7968936491 is an equidigital number, since it uses as much as digits as its factorization.

7968936491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 62.

The square root of 7968936491 is about 89268.8999092069. The cubic root of 7968936491 is about 1997.4080165120.

The spelling of 7968936491 in words is "seven billion, nine hundred sixty-eight million, nine hundred thirty-six thousand, four hundred ninety-one".