791351891 has 16 divisors (see below), whose sum is σ = 872149248. Its totient is φ = 712068000.

The previous prime is 791351879. The next prime is 791351909. The reversal of 791351891 is 198153197.

791351891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791351891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791351861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575681 + ... + 577053.

It is an arithmetic number, because the mean of its divisors is an integer number (54509328).

Almost surely, 2^791351891 is an apocalyptic number.

791351891 is a deficient number, since it is larger than the sum of its proper divisors (80797357).

791351891 is a wasteful number, since it uses less digits than its factorization.

791351891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882.

The product of its digits is 68040, while the sum is 44.

The square root of 791351891 is about 28130.9774270287. The cubic root of 791351891 is about 924.9605597014.

The spelling of 791351891 in words is "seven hundred ninety-one million, three hundred fifty-one thousand, eight hundred ninety-one".