8312578849 has 2 divisors, whose sum is σ = 8312578850. Its totient is φ = 8312578848.

The previous prime is 8312578789. The next prime is 8312578867. The reversal of 8312578849 is 9488752138.

8312578849 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4501739025 + 3810839824 = 67095^2 + 61732^2 .

It is a cyclic number.

It is not a de Polignac number, because 8312578849 - 2⁷ = 8312578721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8312578849.

It is not a weakly prime, because it can be changed into another prime (8312575849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4156289424 + 4156289425.

It is an arithmetic number, because the mean of its divisors is an integer number (4156289425).

Almost surely, 2^8312578849 is an apocalyptic number.

It is an amenable number.

8312578849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8312578849 is an equidigital number, since it uses as much as digits as its factorization.

8312578849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 55.

The square root of 8312578849 is about 91173.3450576428. The cubic root of 8312578849 is about 2025.7161597608.

The spelling of 8312578849 in words is "eight billion, three hundred twelve million, five hundred seventy-eight thousand, eight hundred forty-nine".