791018442 has 36 divisors (see below), whose sum is σ = 1774413810. Its totient is φ = 254373840.

The previous prime is 791018399. The next prime is 791018443. The reversal of 791018442 is 244810197.

It can be written as a sum of positive squares in only one way, i.e., 668274201 + 122744241 = 25851^2 + 11079^2 .

It is a junction number, because it is equal to n+sod(n) for n = 791018397 and 791018406.

It is not an unprimeable number, because it can be changed into a prime (791018443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 641967 + ... + 643197.

Almost surely, 2^791018442 is an apocalyptic number.

791018442 is an abundant number, since it is smaller than the sum of its proper divisors (983395368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

791018442 is a wasteful number, since it uses less digits than its factorization.

791018442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 791018442 is about 28125.0500799554. The cubic root of 791018442 is about 924.8306257206.

The spelling of 791018442 in words is "seven hundred ninety-one million, eighteen thousand, four hundred forty-two".