9665238905 has 16 divisors (see below), whose sum is σ = 14034902400. Its totient is φ = 6237733632.

The previous prime is 9665238857. The next prime is 9665238911. The reversal of 9665238905 is 5098325669.

9665238905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9665238905 - 2³⁰ = 8591497081 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8121455 + ... + 8122644.

It is an arithmetic number, because the mean of its divisors is an integer number (877181400).

Almost surely, 2^9665238905 is an apocalyptic number.

It is an amenable number.

9665238905 is a deficient number, since it is larger than the sum of its proper divisors (4369663495).

9665238905 is a wasteful number, since it uses less digits than its factorization.

9665238905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16244128.

The product of its (nonzero) digits is 3499200, while the sum is 53.

The square root of 9665238905 is about 98311.9469088066. The cubic root of 9665238905 is about 2130.1206265672.

The spelling of 9665238905 in words is "nine billion, six hundred sixty-five million, two hundred thirty-eight thousand, nine hundred five".