9842816663 has 2 divisors, whose sum is σ = 9842816664. Its totient is φ = 9842816662.

The previous prime is 9842816653. The next prime is 9842816729. The reversal of 9842816663 is 3666182489.

It is a weak prime.

It is an emirp because it is prime and its reverse (3666182489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9842816663 - 2⁴ = 9842816647 is a prime.

It is a super-2 number, since 2×9842816663² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9842816623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4921408331 + 4921408332.

It is an arithmetic number, because the mean of its divisors is an integer number (4921408332).

Almost surely, 2^9842816663 is an apocalyptic number.

9842816663 is a deficient number, since it is larger than the sum of its proper divisors (1).

9842816663 is an equidigital number, since it uses as much as digits as its factorization.

9842816663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 53.

The square root of 9842816663 is about 99210.9704770596. The cubic root of 9842816663 is about 2143.0869838987.

The spelling of 9842816663 in words is "nine billion, eight hundred forty-two million, eight hundred sixteen thousand, six hundred sixty-three".