9840965731 has 2 divisors, whose sum is σ = 9840965732. Its totient is φ = 9840965730.

The previous prime is 9840965699. The next prime is 9840965737. The reversal of 9840965731 is 1375690489.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9840965731 - 2⁵ = 9840965699 is a prime.

It is a super-3 number, since 3×9840965731³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (9840965737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920482865 + 4920482866.

It is an arithmetic number, because the mean of its divisors is an integer number (4920482866).

Almost surely, 2^9840965731 is an apocalyptic number.

9840965731 is a deficient number, since it is larger than the sum of its proper divisors (1).

9840965731 is an equidigital number, since it uses as much as digits as its factorization.

9840965731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 9840965731 is about 99201.6417757287. The cubic root of 9840965731 is about 2142.9526403436.

The spelling of 9840965731 in words is "nine billion, eight hundred forty million, nine hundred sixty-five thousand, seven hundred thirty-one".