2805863933 has 2 divisors, whose sum is σ = 2805863934. Its totient is φ = 2805863932.

The previous prime is 2805863911. The next prime is 2805863947. The reversal of 2805863933 is 3393685082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2464427449 + 341436484 = 49643^2 + 18478^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805863933 - 2⁸ = 2805863677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2805863903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402931966 + 1402931967.

It is an arithmetic number, because the mean of its divisors is an integer number (1402931967).

Almost surely, 2^2805863933 is an apocalyptic number.

It is an amenable number.

2805863933 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805863933 is an equidigital number, since it uses as much as digits as its factorization.

2805863933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 2805863933 is about 52970.4062000661. The cubic root of 2805863933 is about 1410.4429862400.

The spelling of 2805863933 in words is "two billion, eight hundred five million, eight hundred sixty-three thousand, nine hundred thirty-three".