8718748609 has 2 divisors, whose sum is σ = 8718748610. Its totient is φ = 8718748608.

The previous prime is 8718748603. The next prime is 8718748627. The reversal of 8718748609 is 9068478178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6648771600 + 2069977009 = 81540^2 + 45497^2 .

It is a cyclic number.

It is not a de Polignac number, because 8718748609 - 2³ = 8718748601 is a prime.

It is not a weakly prime, because it can be changed into another prime (8718748601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4359374304 + 4359374305.

It is an arithmetic number, because the mean of its divisors is an integer number (4359374305).

Almost surely, 2^8718748609 is an apocalyptic number.

It is an amenable number.

8718748609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8718748609 is an equidigital number, since it uses as much as digits as its factorization.

8718748609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 58.

The square root of 8718748609 is about 93374.2395363946. The cubic root of 8718748609 is about 2058.1864682171.

The spelling of 8718748609 in words is "eight billion, seven hundred eighteen million, seven hundred forty-eight thousand, six hundred nine".