813274842 has 8 divisors (see below), whose sum is σ = 1626549696. Its totient is φ = 271091612.

The previous prime is 813274831. The next prime is 813274843. The reversal of 813274842 is 248472318.

It is a sphenic number, since it is the product of 3 distinct primes.

813274842 is an admirable number.

It is a super-2 number, since 2×813274842² = 1322831937260249928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813274842.

It is not an unprimeable number, because it can be changed into a prime (813274843) 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, 67772898 + ... + 67772909.

It is an arithmetic number, because the mean of its divisors is an integer number (203318712).

Almost surely, 2^813274842 is an apocalyptic number.

813274842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

813274842 is a wasteful number, since it uses less digits than its factorization.

813274842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135545812.

The product of its digits is 86016, while the sum is 39.

The square root of 813274842 is about 28517.9740163989. The cubic root of 813274842 is about 933.4243212600.

The spelling of 813274842 in words is "eight hundred thirteen million, two hundred seventy-four thousand, eight hundred forty-two".