8649753509 has 2 divisors, whose sum is σ = 8649753510. Its totient is φ = 8649753508.

The previous prime is 8649753491. The next prime is 8649753547. The reversal of 8649753509 is 9053579468.

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., 5135872225 + 3513881284 = 71665^2 + 59278^2 .

It is a cyclic number.

It is not a de Polignac number, because 8649753509 - 2⁸ = 8649753253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8649753209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4324876754 + 4324876755.

It is an arithmetic number, because the mean of its divisors is an integer number (4324876755).

Almost surely, 2^8649753509 is an apocalyptic number.

It is an amenable number.

8649753509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8649753509 is an equidigital number, since it uses as much as digits as its factorization.

8649753509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The square root of 8649753509 is about 93004.0510354253. The cubic root of 8649753509 is about 2052.7429875772.

The spelling of 8649753509 in words is "eight billion, six hundred forty-nine million, seven hundred fifty-three thousand, five hundred nine".