4857950809 has 2 divisors, whose sum is σ = 4857950810. Its totient is φ = 4857950808.

The previous prime is 4857950771. The next prime is 4857950831. The reversal of 4857950809 is 9080597584.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4409358409 + 448592400 = 66403^2 + 21180^2 .

It is a cyclic number.

It is not a de Polignac number, because 4857950809 - 2²⁷ = 4723733081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4857950809.

It is not a weakly prime, because it can be changed into another prime (4857950849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2428975404 + 2428975405.

It is an arithmetic number, because the mean of its divisors is an integer number (2428975405).

Almost surely, 2^4857950809 is an apocalyptic number.

It is an amenable number.

4857950809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4857950809 is an equidigital number, since it uses as much as digits as its factorization.

4857950809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The square root of 4857950809 is about 69699.0014921304. The cubic root of 4857950809 is about 1693.6267490658.

The spelling of 4857950809 in words is "four billion, eight hundred fifty-seven million, nine hundred fifty thousand, eight hundred nine".