791859613 has 2 divisors, whose sum is σ = 791859614. Its totient is φ = 791859612.

The previous prime is 791859559. The next prime is 791859631. The reversal of 791859613 is 316958197.

Together with next prime (791859631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 790903129 + 956484 = 28123^2 + 978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791859613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791859113) 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, 395929806 + 395929807.

It is an arithmetic number, because the mean of its divisors is an integer number (395929807).

Almost surely, 2^791859613 is an apocalyptic number.

It is an amenable number.

791859613 is a deficient number, since it is larger than the sum of its proper divisors (1).

791859613 is an equidigital number, since it uses as much as digits as its factorization.

791859613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The square root of 791859613 is about 28140.0002309879. Note that the first 3 decimals coincide. The cubic root of 791859613 is about 925.1583319910.

The spelling of 791859613 in words is "seven hundred ninety-one million, eight hundred fifty-nine thousand, six hundred thirteen".