9688637889 has 24 divisors (see below), whose sum is σ = 16017777152. Its totient is φ = 5528113920.

The previous prime is 9688637887. The next prime is 9688637899. The reversal of 9688637889 is 9887368869.

9688637889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9688637889 - 2¹ = 9688637887 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9688637887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71857 + ... + 156654.

Almost surely, 2^9688637889 is an apocalyptic number.

It is an amenable number.

9688637889 is a deficient number, since it is larger than the sum of its proper divisors (6329139263).

9688637889 is a wasteful number, since it uses less digits than its factorization.

9688637889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229197 (or 229194 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 72.

The square root of 9688637889 is about 98430.8787373149. The cubic root of 9688637889 is about 2131.8382075084.

The spelling of 9688637889 in words is "nine billion, six hundred eighty-eight million, six hundred thirty-seven thousand, eight hundred eighty-nine".