8197045249 has 2 divisors, whose sum is σ = 8197045250. Its totient is φ = 8197045248.

The previous prime is 8197045247. The next prime is 8197045267. The reversal of 8197045249 is 9425407918.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8173425649 + 23619600 = 90407^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 8197045249 - 2¹ = 8197045247 is a prime.

Together with 8197045247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8197045247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4098522624 + 4098522625.

It is an arithmetic number, because the mean of its divisors is an integer number (4098522625).

Almost surely, 2^8197045249 is an apocalyptic number.

It is an amenable number.

8197045249 is a deficient number, since it is larger than the sum of its proper divisors (1).

8197045249 is an equidigital number, since it uses as much as digits as its factorization.

8197045249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 8197045249 is about 90537.5350282964. The cubic root of 8197045249 is about 2016.2874370520.

The spelling of 8197045249 in words is "eight billion, one hundred ninety-seven million, forty-five thousand, two hundred forty-nine".