9685581613 has 4 divisors (see below), whose sum is σ = 9685800288. Its totient is φ = 9685362940.

The previous prime is 9685581599. The next prime is 9685581677. The reversal of 9685581613 is 3161855869.

9685581613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3161855869 = 1571 ⋅2012639.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9685581613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9685584613) 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 3 ways as a sum of consecutive naturals, for example, 16783 + ... + 140188.

It is an arithmetic number, because the mean of its divisors is an integer number (2421450072).

Almost surely, 2^9685581613 is an apocalyptic number.

It is an amenable number.

9685581613 is a deficient number, since it is larger than the sum of its proper divisors (218675).

9685581613 is a wasteful number, since it uses less digits than its factorization.

9685581613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218674.

The product of its digits is 1555200, while the sum is 52.

The square root of 9685581613 is about 98415.3525269305. The cubic root of 9685581613 is about 2131.6140214998.

The spelling of 9685581613 in words is "nine billion, six hundred eighty-five million, five hundred eighty-one thousand, six hundred thirteen".