810448612949 has 2 divisors, whose sum is σ = 810448612950. Its totient is φ = 810448612948.

The previous prime is 810448612931. The next prime is 810448612973. The reversal of 810448612949 is 949216844018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736176012049 + 74272600900 = 858007^2 + 272530^2 .

It is a cyclic number.

It is not a de Polignac number, because 810448612949 - 2²⁸ = 810180177493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 810448612894 and 810448612903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (810448612249) 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, 405224306474 + 405224306475.

It is an arithmetic number, because the mean of its divisors is an integer number (405224306475).

Almost surely, 2^810448612949 is an apocalyptic number.

It is an amenable number.

810448612949 is a deficient number, since it is larger than the sum of its proper divisors (1).

810448612949 is an equidigital number, since it uses as much as digits as its factorization.

810448612949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 810448612949 in words is "eight hundred ten billion, four hundred forty-eight million, six hundred twelve thousand, nine hundred forty-nine".