9815796899 has 2 divisors, whose sum is σ = 9815796900. Its totient is φ = 9815796898.

The previous prime is 9815796841. The next prime is 9815796911. The reversal of 9815796899 is 9986975189.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9815796899 - 2¹⁶ = 9815731363 is a prime.

It is not a weakly prime, because it can be changed into another prime (9815796829) 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, 4907898449 + 4907898450.

It is an arithmetic number, because the mean of its divisors is an integer number (4907898450).

Almost surely, 2^9815796899 is an apocalyptic number.

9815796899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9815796899 is an equidigital number, since it uses as much as digits as its factorization.

9815796899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88179840, while the sum is 71.

The square root of 9815796899 is about 99074.7036281209. The cubic root of 9815796899 is about 2141.1241727234.

The spelling of 9815796899 in words is "nine billion, eight hundred fifteen million, seven hundred ninety-six thousand, eight hundred ninety-nine".