8195819447 has 2 divisors, whose sum is σ = 8195819448. Its totient is φ = 8195819446.

The previous prime is 8195819441. The next prime is 8195819473. The reversal of 8195819447 is 7449185918.

8195819447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8195819447 - 2⁴ = 8195819431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8195819392 and 8195819401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8195819441) 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, 4097909723 + 4097909724.

It is an arithmetic number, because the mean of its divisors is an integer number (4097909724).

Almost surely, 2^8195819447 is an apocalyptic number.

8195819447 is a deficient number, since it is larger than the sum of its proper divisors (1).

8195819447 is an equidigital number, since it uses as much as digits as its factorization.

8195819447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 56.

The square root of 8195819447 is about 90530.7651961475. The cubic root of 8195819447 is about 2016.1869255340.

The spelling of 8195819447 in words is "eight billion, one hundred ninety-five million, eight hundred nineteen thousand, four hundred forty-seven".