9739641731 has 2 divisors, whose sum is σ = 9739641732. Its totient is φ = 9739641730.

The previous prime is 9739641719. The next prime is 9739641781. The reversal of 9739641731 is 1371469379.

It is an a-pointer prime, because the next prime (9739641781) can be obtained adding 9739641731 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9739641731 - 2¹⁴ = 9739625347 is a prime.

It is a super-2 number, since 2×9739641731² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9739641731.

It is not a weakly prime, because it can be changed into another prime (9739641781) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4869820865 + 4869820866.

It is an arithmetic number, because the mean of its divisors is an integer number (4869820866).

Almost surely, 2^9739641731 is an apocalyptic number.

9739641731 is a deficient number, since it is larger than the sum of its proper divisors (1).

9739641731 is an equidigital number, since it uses as much as digits as its factorization.

9739641731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 50.

The square root of 9739641731 is about 98689.6232184519. The cubic root of 9739641731 is about 2135.5725369168.

The spelling of 9739641731 in words is "nine billion, seven hundred thirty-nine million, six hundred forty-one thousand, seven hundred thirty-one".