9879913165 has 8 divisors (see below), whose sum is σ = 11878654968. Its totient is φ = 7888757760.

The previous prime is 9879913157. The next prime is 9879913261. The reversal of 9879913165 is 5613199789.

It can be written as a sum of positive squares in 4 ways, for example, as 2580944809 + 7298968356 = 50803^2 + 85434^2 .

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

It is not a de Polignac number, because 9879913165 - 2³ = 9879913157 is a prime.

It is a super-2 number, since 2×9879913165² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893732 + ... + 1898941.

It is an arithmetic number, because the mean of its divisors is an integer number (1484831871).

Almost surely, 2^9879913165 is an apocalyptic number.

It is an amenable number.

9879913165 is a deficient number, since it is larger than the sum of its proper divisors (1998741803).

9879913165 is a wasteful number, since it uses less digits than its factorization.

9879913165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793199.

The product of its digits is 3674160, while the sum is 58.

The square root of 9879913165 is about 99397.7523136213. The cubic root of 9879913165 is about 2145.7759622336.

The spelling of 9879913165 in words is "nine billion, eight hundred seventy-nine million, nine hundred thirteen thousand, one hundred sixty-five".