813118612 has 12 divisors (see below), whose sum is σ = 1453233600. Its totient is φ = 397909016.

The previous prime is 813118597. The next prime is 813118613. The reversal of 813118612 is 216811318.

It is a super-2 number, since 2×813118612² = 1322323754361613088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813118613) 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, 2162362 + ... + 2162737.

It is an arithmetic number, because the mean of its divisors is an integer number (121102800).

Almost surely, 2^813118612 is an apocalyptic number.

It is an amenable number.

813118612 is a deficient number, since it is larger than the sum of its proper divisors (640114988).

813118612 is a wasteful number, since it uses less digits than its factorization.

813118612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325150 (or 4325148 counting only the distinct ones).

The product of its digits is 2304, while the sum is 31.

The square root of 813118612 is about 28515.2347351376. The cubic root of 813118612 is about 933.3645471987.

The spelling of 813118612 in words is "eight hundred thirteen million, one hundred eighteen thousand, six hundred twelve".