819848899 has 2 divisors, whose sum is σ = 819848900. Its totient is φ = 819848898.

The previous prime is 819848893. The next prime is 819848921. The reversal of 819848899 is 998848918.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 819848899 - 2⁹ = 819848387 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 819848899.

It is not a weakly prime, because it can be changed into another prime (819848893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409924449 + 409924450.

It is an arithmetic number, because the mean of its divisors is an integer number (409924450).

Almost surely, 2^819848899 is an apocalyptic number.

819848899 is a deficient number, since it is larger than the sum of its proper divisors (1).

819848899 is an equidigital number, since it uses as much as digits as its factorization.

819848899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 64.

The square root of 819848899 is about 28633.0036670972. The cubic root of 819848899 is about 935.9326672989.

The spelling of 819848899 in words is "eight hundred nineteen million, eight hundred forty-eight thousand, eight hundred ninety-nine".