9653971865 has 16 divisors (see below), whose sum is σ = 11675845440. Its totient is φ = 7662532800.

The previous prime is 9653971853. The next prime is 9653971871. The reversal of 9653971865 is 5681793569.

It is not a de Polignac number, because 9653971865 - 2¹⁰ = 9653970841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317542 + ... + 1324848.

It is an arithmetic number, because the mean of its divisors is an integer number (729740340).

Almost surely, 2^9653971865 is an apocalyptic number.

It is an amenable number.

9653971865 is a deficient number, since it is larger than the sum of its proper divisors (2021873575).

9653971865 is a wasteful number, since it uses less digits than its factorization.

9653971865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9352.

The product of its digits is 12247200, while the sum is 59.

The square root of 9653971865 is about 98254.6277027194. The cubic root of 9653971865 is about 2129.2925909484.

The spelling of 9653971865 in words is "nine billion, six hundred fifty-three million, nine hundred seventy-one thousand, eight hundred sixty-five".