791578243 has 2 divisors, whose sum is σ = 791578244. Its totient is φ = 791578242.

The previous prime is 791578223. The next prime is 791578253. The reversal of 791578243 is 342875197.

791578243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791578243 is a prime.

It is a super-2 number, since 2×791578243² = 1253192229581934098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 791578193 and 791578202.

It is not a weakly prime, because it can be changed into another prime (791578213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395789121 + 395789122.

It is an arithmetic number, because the mean of its divisors is an integer number (395789122).

Almost surely, 2^791578243 is an apocalyptic number.

791578243 is a deficient number, since it is larger than the sum of its proper divisors (1).

791578243 is an equidigital number, since it uses as much as digits as its factorization.

791578243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 46.

The square root of 791578243 is about 28135.0003198863. Note that the first 3 decimals coincide. The cubic root of 791578243 is about 925.0487407480.

The spelling of 791578243 in words is "seven hundred ninety-one million, five hundred seventy-eight thousand, two hundred forty-three".