791812438 has 4 divisors (see below), whose sum is σ = 1187718660. Its totient is φ = 395906218.

The previous prime is 791812423. The next prime is 791812457. The reversal of 791812438 is 834218197.

791812438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834218197 = 15773 ⋅52889.

It is a junction number, because it is equal to n+sod(n) for n = 791812394 and 791812403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197953108 + ... + 197953111.

It is an arithmetic number, because the mean of its divisors is an integer number (296929665).

Almost surely, 2^791812438 is an apocalyptic number.

791812438 is a deficient number, since it is larger than the sum of its proper divisors (395906222).

791812438 is a wasteful number, since it uses less digits than its factorization.

791812438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395906221.

The product of its digits is 96768, while the sum is 43.

The square root of 791812438 is about 28139.1619988940. The cubic root of 791812438 is about 925.1399595378.

The spelling of 791812438 in words is "seven hundred ninety-one million, eight hundred twelve thousand, four hundred thirty-eight".