2082805909 has 2 divisors, whose sum is σ = 2082805910. Its totient is φ = 2082805908.

The previous prime is 2082805861. The next prime is 2082805939. The reversal of 2082805909 is 9095082802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1252098225 + 830707684 = 35385^2 + 28822^2 .

It is a cyclic number.

It is not a de Polignac number, because 2082805909 - 2¹¹ = 2082803861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2082805939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041402954 + 1041402955.

It is an arithmetic number, because the mean of its divisors is an integer number (1041402955).

Almost surely, 2^2082805909 is an apocalyptic number.

It is an amenable number.

2082805909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2082805909 is an equidigital number, since it uses as much as digits as its factorization.

2082805909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 2082805909 is about 45637.7684489503. The cubic root of 2082805909 is about 1277.0745994950.

The spelling of 2082805909 in words is "two billion, eighty-two million, eight hundred five thousand, nine hundred nine".