8371366849 has 2 divisors, whose sum is σ = 8371366850. Its totient is φ = 8371366848.

The previous prime is 8371366841. The next prime is 8371366873. The reversal of 8371366849 is 9486631738.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8307046449 + 64320400 = 91143^2 + 8020^2 .

It is a cyclic number.

It is not a de Polignac number, because 8371366849 - 2³ = 8371366841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8371366849.

It is not a weakly prime, because it can be changed into another prime (8371366841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4185683424 + 4185683425.

It is an arithmetic number, because the mean of its divisors is an integer number (4185683425).

Almost surely, 2^8371366849 is an apocalyptic number.

It is an amenable number.

8371366849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8371366849 is an equidigital number, since it uses as much as digits as its factorization.

8371366849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 55.

The square root of 8371366849 is about 91495.1739109774. The cubic root of 8371366849 is about 2030.4803516785.

The spelling of 8371366849 in words is "eight billion, three hundred seventy-one million, three hundred sixty-six thousand, eight hundred forty-nine".