4519791509 has 2 divisors, whose sum is σ = 4519791510. Its totient is φ = 4519791508.

The previous prime is 4519791503. The next prime is 4519791541. The reversal of 4519791509 is 9051979154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4441822609 + 77968900 = 66647^2 + 8830^2 .

It is a cyclic number.

It is not a de Polignac number, because 4519791509 - 2³² = 224824213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4519791503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2259895754 + 2259895755.

It is an arithmetic number, because the mean of its divisors is an integer number (2259895755).

Almost surely, 2^4519791509 is an apocalyptic number.

It is an amenable number.

4519791509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4519791509 is an equidigital number, since it uses as much as digits as its factorization.

4519791509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 50.

The square root of 4519791509 is about 67229.3946797084. The cubic root of 4519791509 is about 1653.3804596520.

The spelling of 4519791509 in words is "four billion, five hundred nineteen million, seven hundred ninety-one thousand, five hundred nine".