8085631813 has 16 divisors (see below), whose sum is σ = 9494271360. Its totient is φ = 6742803456.

The previous prime is 8085631787. The next prime is 8085631837. The reversal of 8085631813 is 3181365808.

It is a cyclic number.

It is not a de Polignac number, because 8085631813 - 2¹³ = 8085623621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8085631813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8085635813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60856 + ... + 140977.

It is an arithmetic number, because the mean of its divisors is an integer number (593391960).

Almost surely, 2^8085631813 is an apocalyptic number.

It is an amenable number.

8085631813 is a deficient number, since it is larger than the sum of its proper divisors (1408639547).

8085631813 is a wasteful number, since it uses less digits than its factorization.

8085631813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201996.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 8085631813 is about 89920.1413088302. The cubic root of 8085631813 is about 2007.1106736164.

The spelling of 8085631813 in words is "eight billion, eighty-five million, six hundred thirty-one thousand, eight hundred thirteen".