2805765085 has 16 divisors (see below), whose sum is σ = 3566711232. Its totient is φ = 2111545600.

The previous prime is 2805765073. The next prime is 2805765121. The reversal of 2805765085 is 5805675082.

It is not a de Polignac number, because 2805765085 - 2⁹ = 2805764573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198090 + ... + 211780.

It is an arithmetic number, because the mean of its divisors is an integer number (222919452).

Almost surely, 2^2805765085 is an apocalyptic number.

It is an amenable number.

2805765085 is a deficient number, since it is larger than the sum of its proper divisors (760946147).

2805765085 is a wasteful number, since it uses less digits than its factorization.

2805765085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16124.

The product of its (nonzero) digits is 672000, while the sum is 46.

The square root of 2805765085 is about 52969.4731425564. The cubic root of 2805765085 is about 1410.4264231768.

The spelling of 2805765085 in words is "two billion, eight hundred five million, seven hundred sixty-five thousand, eighty-five".