8108813613 has 8 divisors (see below), whose sum is σ = 10815344800. Its totient is φ = 5404079088.

The previous prime is 8108813611. The next prime is 8108813617. The reversal of 8108813613 is 3163188018.

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

It is not a de Polignac number, because 8108813613 - 2¹ = 8108813611 is a prime.

It is a super-2 number, since 2×8108813613² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8108813611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438598 + ... + 456711.

It is an arithmetic number, because the mean of its divisors is an integer number (1351918100).

Almost surely, 2^8108813613 is an apocalyptic number.

It is an amenable number.

8108813613 is a deficient number, since it is larger than the sum of its proper divisors (2706531187).

8108813613 is a wasteful number, since it uses less digits than its factorization.

8108813613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898331.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 8108813613 is about 90048.9512043311. The cubic root of 8108813613 is about 2009.0269964525.

The spelling of 8108813613 in words is "eight billion, one hundred eight million, eight hundred thirteen thousand, six hundred thirteen".