9681962693 has 4 divisors (see below), whose sum is σ = 10426729068. Its totient is φ = 8937196320.

The previous prime is 9681962659. The next prime is 9681962701. The reversal of 9681962693 is 3962691869.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3962691869 = 3677 ⋅1077697.

It can be written as a sum of positive squares in 2 ways, for example, as 3573289729 + 6108672964 = 59777^2 + 78158^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9681962693 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 (9681962093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372383168 + ... + 372383193.

It is an arithmetic number, because the mean of its divisors is an integer number (2606682267).

Almost surely, 2^9681962693 is an apocalyptic number.

It is an amenable number.

9681962693 is a deficient number, since it is larger than the sum of its proper divisors (744766375).

9681962693 is a wasteful number, since it uses less digits than its factorization.

9681962693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744766374.

The product of its digits is 7558272, while the sum is 59.

The square root of 9681962693 is about 98396.9648566459. The cubic root of 9681962693 is about 2131.3485030590.

The spelling of 9681962693 in words is "nine billion, six hundred eighty-one million, nine hundred sixty-two thousand, six hundred ninety-three".