8945757809 has 2 divisors, whose sum is σ = 8945757810. Its totient is φ = 8945757808.

The previous prime is 8945757763. The next prime is 8945757869. The reversal of 8945757809 is 9087575498.

8945757809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8117469409 + 828288400 = 90097^2 + 28780^2 .

It is a cyclic number.

It is not a de Polignac number, because 8945757809 - 2⁸ = 8945757553 is a prime.

It is not a weakly prime, because it can be changed into another prime (8945757869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4472878904 + 4472878905.

It is an arithmetic number, because the mean of its divisors is an integer number (4472878905).

Almost surely, 2^8945757809 is an apocalyptic number.

It is an amenable number.

8945757809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8945757809 is an equidigital number, since it uses as much as digits as its factorization.

8945757809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25401600, while the sum is 62.

The square root of 8945757809 is about 94582.0163085985. The cubic root of 8945757809 is about 2075.8965736178.

The spelling of 8945757809 in words is "eight billion, nine hundred forty-five million, seven hundred fifty-seven thousand, eight hundred nine".