4165809073 has 2 divisors, whose sum is σ = 4165809074. Its totient is φ = 4165809072.

The previous prime is 4165809061. The next prime is 4165809091. The reversal of 4165809073 is 3709085614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3627893824 + 537915249 = 60232^2 + 23193^2 .

It is a cyclic number.

It is not a de Polignac number, because 4165809073 - 2⁵ = 4165809041 is a prime.

It is not a weakly prime, because it can be changed into another prime (4165809173) 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, 2082904536 + 2082904537.

It is an arithmetic number, because the mean of its divisors is an integer number (2082904537).

Almost surely, 2^4165809073 is an apocalyptic number.

It is an amenable number.

4165809073 is a deficient number, since it is larger than the sum of its proper divisors (1).

4165809073 is an equidigital number, since it uses as much as digits as its factorization.

4165809073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 4165809073 is about 64543.0792029633. The cubic root of 4165809073 is about 1609.0385670901.

The spelling of 4165809073 in words is "four billion, one hundred sixty-five million, eight hundred nine thousand, seventy-three".