4645640459 has 2 divisors, whose sum is σ = 4645640460. Its totient is φ = 4645640458.

The previous prime is 4645640437. The next prime is 4645640479. The reversal of 4645640459 is 9540465464.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4645640459 - 2⁸ = 4645640203 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4645640479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322820229 + 2322820230.

It is an arithmetic number, because the mean of its divisors is an integer number (2322820230).

Almost surely, 2^4645640459 is an apocalyptic number.

4645640459 is a deficient number, since it is larger than the sum of its proper divisors (1).

4645640459 is an equidigital number, since it uses as much as digits as its factorization.

4645640459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The square root of 4645640459 is about 68158.9352836442. The cubic root of 4645640459 is about 1668.5857556016.

The spelling of 4645640459 in words is "four billion, six hundred forty-five million, six hundred forty thousand, four hundred fifty-nine".