9815796841 has 2 divisors, whose sum is σ = 9815796842. Its totient is φ = 9815796840.

The previous prime is 9815796829. The next prime is 9815796899. The reversal of 9815796841 is 1486975189.

It is an a-pointer prime, because the next prime (9815796899) can be obtained adding 9815796841 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7903921216 + 1911875625 = 88904^2 + 43725^2 .

It is a cyclic number.

It is not a de Polignac number, because 9815796841 - 2¹⁹ = 9815272553 is a prime.

It is a super-6 number, since 6×9815796841⁶ (a number of 61 digits) contains 666666 as substring.

It is not a weakly prime, because it can be changed into another prime (9815796041) 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 as a sum of consecutive naturals, namely, 4907898420 + 4907898421.

It is an arithmetic number, because the mean of its divisors is an integer number (4907898421).

Almost surely, 2^9815796841 is an apocalyptic number.

It is an amenable number.

9815796841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9815796841 is an equidigital number, since it uses as much as digits as its factorization.

9815796841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 58.

The square root of 9815796841 is about 99074.7033354125. The cubic root of 9815796841 is about 2141.1241685062.

The spelling of 9815796841 in words is "nine billion, eight hundred fifteen million, seven hundred ninety-six thousand, eight hundred forty-one".