9659945109 has 32 divisors (see below), whose sum is σ = 13335404544. Its totient is φ = 6216616640.

The previous prime is 9659945107. The next prime is 9659945117. The reversal of 9659945109 is 9015499569.

9659945109 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 9659945109 - 2¹ = 9659945107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9659945107) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3193972 + ... + 3196994.

It is an arithmetic number, because the mean of its divisors is an integer number (416731392).

Almost surely, 2^9659945109 is an apocalyptic number.

It is an amenable number.

9659945109 is a deficient number, since it is larger than the sum of its proper divisors (3675459435).

9659945109 is a wasteful number, since it uses less digits than its factorization.

9659945109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377.

The product of its (nonzero) digits is 3936600, while the sum is 57.

The square root of 9659945109 is about 98285.0197588625. The cubic root of 9659945109 is about 2129.7316558946.

The spelling of 9659945109 in words is "nine billion, six hundred fifty-nine million, nine hundred forty-five thousand, one hundred nine".