7691167889 has 2 divisors, whose sum is σ = 7691167890. Its totient is φ = 7691167888.

The previous prime is 7691167849. The next prime is 7691167907. The reversal of 7691167889 is 9887611967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7614307600 + 76860289 = 87260^2 + 8767^2 .

It is a cyclic number.

It is not a de Polignac number, because 7691167889 - 2³² = 3396200593 is a prime.

It is not a weakly prime, because it can be changed into another prime (7691167849) 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, 3845583944 + 3845583945.

It is an arithmetic number, because the mean of its divisors is an integer number (3845583945).

Almost surely, 2^7691167889 is an apocalyptic number.

It is an amenable number.

7691167889 is a deficient number, since it is larger than the sum of its proper divisors (1).

7691167889 is an equidigital number, since it uses as much as digits as its factorization.

7691167889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 62.

The square root of 7691167889 is about 87699.3038113758. The cubic root of 7691167889 is about 1973.9255290199.

The spelling of 7691167889 in words is "seven billion, six hundred ninety-one million, one hundred sixty-seven thousand, eight hundred eighty-nine".