791679157 has 2 divisors, whose sum is σ = 791679158. Its totient is φ = 791679156.

The previous prime is 791679043. The next prime is 791679173. The reversal of 791679157 is 751976197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772895601 + 18783556 = 27801^2 + 4334^2 .

It is a cyclic number.

It is not a de Polignac number, because 791679157 - 2⁷ = 791679029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791659157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395839578 + 395839579.

It is an arithmetic number, because the mean of its divisors is an integer number (395839579).

Almost surely, 2^791679157 is an apocalyptic number.

It is an amenable number.

791679157 is a deficient number, since it is larger than the sum of its proper divisors (1).

791679157 is an equidigital number, since it uses as much as digits as its factorization.

791679157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 833490, while the sum is 52.

The square root of 791679157 is about 28136.7936517294. The cubic root of 791679157 is about 925.0880488866.

The spelling of 791679157 in words is "seven hundred ninety-one million, six hundred seventy-nine thousand, one hundred fifty-seven".