8513926849 has 2 divisors, whose sum is σ = 8513926850. Its totient is φ = 8513926848.

The previous prime is 8513926819. The next prime is 8513926867. The reversal of 8513926849 is 9486293158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6430917249 + 2083009600 = 80193^2 + 45640^2 .

It is a cyclic number.

It is not a de Polignac number, because 8513926849 - 2³¹ = 6366443201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8513926849.

It is not a weakly prime, because it can be changed into another prime (8513926819) 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, 4256963424 + 4256963425.

It is an arithmetic number, because the mean of its divisors is an integer number (4256963425).

Almost surely, 2^8513926849 is an apocalyptic number.

It is an amenable number.

8513926849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8513926849 is an equidigital number, since it uses as much as digits as its factorization.

8513926849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 55.

The square root of 8513926849 is about 92270.9426038338. The cubic root of 8513926849 is about 2041.9415426601.

The spelling of 8513926849 in words is "eight billion, five hundred thirteen million, nine hundred twenty-six thousand, eight hundred forty-nine".