2805803011 has 4 divisors (see below), whose sum is σ = 3060876024. Its totient is φ = 2550730000.

The previous prime is 2805802969. The next prime is 2805803023. The reversal of 2805803011 is 1103085082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2805803011 - 2¹³ = 2805794819 is a prime.

It is a super-2 number, since 2×2805803011² = 15745061073073332242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805803111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127536490 + ... + 127536511.

It is an arithmetic number, because the mean of its divisors is an integer number (765219006).

Almost surely, 2^2805803011 is an apocalyptic number.

2805803011 is a deficient number, since it is larger than the sum of its proper divisors (255073013).

2805803011 is a wasteful number, since it uses less digits than its factorization.

2805803011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255073012.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 2805803011 is about 52969.8311399989. The cubic root of 2805803011 is about 1410.4327781388.

Adding to 2805803011 its reverse (1103085082), we get a palindrome (3908888093).

The spelling of 2805803011 in words is "two billion, eight hundred five million, eight hundred three thousand, eleven".