4517997509 has 2 divisors, whose sum is σ = 4517997510. Its totient is φ = 4517997508.

The previous prime is 4517997499. The next prime is 4517997541. The reversal of 4517997509 is 9057997154.

4517997509 is digitally balanced in base 3, 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., 3081360100 + 1436637409 = 55510^2 + 37903^2 .

It is a cyclic number.

It is not a de Polignac number, because 4517997509 - 2¹⁶ = 4517931973 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 (4517997569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2258998754 + 2258998755.

It is an arithmetic number, because the mean of its divisors is an integer number (2258998755).

Almost surely, 2^4517997509 is an apocalyptic number.

It is an amenable number.

4517997509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4517997509 is an equidigital number, since it uses as much as digits as its factorization.

4517997509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3572100, while the sum is 56.

The square root of 4517997509 is about 67216.0509774265. The cubic root of 4517997509 is about 1653.1616769147.

The spelling of 4517997509 in words is "four billion, five hundred seventeen million, nine hundred ninety-seven thousand, five hundred nine".