791193281 has 4 divisors (see below), whose sum is σ = 791249712. Its totient is φ = 791136852.

The previous prime is 791193259. The next prime is 791193301. The reversal of 791193281 is 182391197.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 182391197 = 31 ⋅5883587.

It is a cyclic number.

It is not a de Polignac number, because 791193281 - 2⁶ = 791193217 is a prime.

It is a super-2 number, since 2×791193281² = 1251973615799089922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791193881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10790 + ... + 41216.

It is an arithmetic number, because the mean of its divisors is an integer number (197812428).

Almost surely, 2^791193281 is an apocalyptic number.

It is an amenable number.

791193281 is a deficient number, since it is larger than the sum of its proper divisors (56431).

791193281 is a wasteful number, since it uses less digits than its factorization.

791193281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56430.

The product of its digits is 27216, while the sum is 41.

The square root of 791193281 is about 28128.1581515747. The cubic root of 791193281 is about 924.8987592143.

The spelling of 791193281 in words is "seven hundred ninety-one million, one hundred ninety-three thousand, two hundred eighty-one".