4102065809 has 2 divisors, whose sum is σ = 4102065810. Its totient is φ = 4102065808.

The previous prime is 4102065761. The next prime is 4102065817. The reversal of 4102065809 is 9085602014.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3559315600 + 542750209 = 59660^2 + 23297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4102065809 is a prime.

It is not a weakly prime, because it can be changed into another prime (4102065839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2051032904 + 2051032905.

It is an arithmetic number, because the mean of its divisors is an integer number (2051032905).

Almost surely, 2^4102065809 is an apocalyptic number.

It is an amenable number.

4102065809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4102065809 is an equidigital number, since it uses as much as digits as its factorization.

4102065809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 4102065809 is about 64047.3716010267. The cubic root of 4102065809 is about 1600.7894293170.

The spelling of 4102065809 in words is "four billion, one hundred two million, sixty-five thousand, eight hundred nine".