8631157613 has 16 divisors (see below), whose sum is σ = 9462956160. Its totient is φ = 7823635776.

The previous prime is 8631157589. The next prime is 8631157621. The reversal of 8631157613 is 3167511368.

It is a cyclic number.

It is not a de Polignac number, because 8631157613 - 2¹⁶ = 8631092077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8631157663) 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, 759056 + ... + 770342.

It is an arithmetic number, because the mean of its divisors is an integer number (591434760).

Almost surely, 2^8631157613 is an apocalyptic number.

It is an amenable number.

8631157613 is a deficient number, since it is larger than the sum of its proper divisors (831798547).

8631157613 is a wasteful number, since it uses less digits than its factorization.

8631157613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12356.

The product of its digits is 90720, while the sum is 41.

The square root of 8631157613 is about 92904.0236642095. The cubic root of 8631157613 is about 2051.2708846154.

The spelling of 8631157613 in words is "eight billion, six hundred thirty-one million, one hundred fifty-seven thousand, six hundred thirteen".