9845653841 has 2 divisors, whose sum is σ = 9845653842. Its totient is φ = 9845653840.

The previous prime is 9845653823. The next prime is 9845653843. The reversal of 9845653841 is 1483565489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5945026816 + 3900627025 = 77104^2 + 62455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9845653841 is a prime.

Together with 9845653843, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9845653843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4922826920 + 4922826921.

It is an arithmetic number, because the mean of its divisors is an integer number (4922826921).

Almost surely, 2^9845653841 is an apocalyptic number.

It is an amenable number.

9845653841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9845653841 is an equidigital number, since it uses as much as digits as its factorization.

9845653841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4147200, while the sum is 53.

The square root of 9845653841 is about 99225.2681578639. The cubic root of 9845653841 is about 2143.2928780491.

The spelling of 9845653841 in words is "nine billion, eight hundred forty-five million, six hundred fifty-three thousand, eight hundred forty-one".