2805335081 has 2 divisors, whose sum is σ = 2805335082. Its totient is φ = 2805335080.

The previous prime is 2805335069. The next prime is 2805335083. The reversal of 2805335081 is 1805335082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2633331856 + 172003225 = 51316^2 + 13115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805335081 - 2²⁶ = 2738226217 is a prime.

It is a super-2 number, since 2×2805335081² = 15739809833378553122, which contains 22 as substring.

Together with 2805335083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2805335083) 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, 1402667540 + 1402667541.

It is an arithmetic number, because the mean of its divisors is an integer number (1402667541).

Almost surely, 2^2805335081 is an apocalyptic number.

It is an amenable number.

2805335081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805335081 is an equidigital number, since it uses as much as digits as its factorization.

2805335081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 2805335081 is about 52965.4140076333. The cubic root of 2805335081 is about 1410.3543667773.

Subtracting from 2805335081 its reverse (1805335082), we obtain a palindrome (999999999).

The spelling of 2805335081 in words is "two billion, eight hundred five million, three hundred thirty-five thousand, eighty-one".