9690981889 has 4 divisors (see below), whose sum is σ = 10003594240. Its totient is φ = 9378369540.

The previous prime is 9690981829. The next prime is 9690981941. The reversal of 9690981889 is 9881890969.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9690981889 - 2¹¹ = 9690979841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9690981829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156306129 + ... + 156306190.

It is an arithmetic number, because the mean of its divisors is an integer number (2500898560).

Almost surely, 2^9690981889 is an apocalyptic number.

It is an amenable number.

9690981889 is a deficient number, since it is larger than the sum of its proper divisors (312612351).

9690981889 is a wasteful number, since it uses less digits than its factorization.

9690981889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312612350.

The product of its (nonzero) digits is 20155392, while the sum is 67.

The square root of 9690981889 is about 98442.7848498812. The cubic root of 9690981889 is about 2132.0101142267.

The spelling of 9690981889 in words is "nine billion, six hundred ninety million, nine hundred eighty-one thousand, eight hundred eighty-nine".