2064245809 has 2 divisors, whose sum is σ = 2064245810. Its totient is φ = 2064245808.

The previous prime is 2064245801. The next prime is 2064245849. The reversal of 2064245809 is 9085424602.

It is an a-pointer prime, because the next prime (2064245849) can be obtained adding 2064245809 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1424307600 + 639938209 = 37740^2 + 25297^2 .

It is a cyclic number.

It is not a de Polignac number, because 2064245809 - 2³ = 2064245801 is a prime.

It is a super-2 number, since 2×2064245809² = 8522221519948128962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2064245801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032122904 + 1032122905.

It is an arithmetic number, because the mean of its divisors is an integer number (1032122905).

Almost surely, 2^2064245809 is an apocalyptic number.

It is an amenable number.

2064245809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064245809 is an equidigital number, since it uses as much as digits as its factorization.

2064245809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2064245809 is about 45433.9719703219. The cubic root of 2064245809 is about 1273.2698941299.

The spelling of 2064245809 in words is "two billion, sixty-four million, two hundred forty-five thousand, eight hundred nine".