2800513805 has 16 divisors (see below), whose sum is σ = 3471734784. Its totient is φ = 2166445440.

The previous prime is 2800513801. The next prime is 2800513811. The reversal of 2800513805 is 5083150082.

It is a happy number.

It is not a de Polignac number, because 2800513805 - 2² = 2800513801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800513801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214217 + ... + 226913.

It is an arithmetic number, because the mean of its divisors is an integer number (216983424).

Almost surely, 2^2800513805 is an apocalyptic number.

It is an amenable number.

2800513805 is a deficient number, since it is larger than the sum of its proper divisors (671220979).

2800513805 is a wasteful number, since it uses less digits than its factorization.

2800513805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14156.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 2800513805 is about 52919.8809994883. The cubic root of 2800513805 is about 1409.5459539336.

Adding to 2800513805 its reverse (5083150082), we get a palindrome (7883663887).

The spelling of 2800513805 in words is "two billion, eight hundred million, five hundred thirteen thousand, eight hundred five".