2560813809 has 8 divisors (see below), whose sum is σ = 3425190720. Its totient is φ = 1701823056.

The previous prime is 2560813799. The next prime is 2560813817. The reversal of 2560813809 is 9083180652.

2560813809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2560813809 - 2⁵ = 2560813777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2560813889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1345429 + ... + 1347330.

It is an arithmetic number, because the mean of its divisors is an integer number (428148840).

Almost surely, 2^2560813809 is an apocalyptic number.

It is an amenable number.

2560813809 is a deficient number, since it is larger than the sum of its proper divisors (864376911).

2560813809 is a wasteful number, since it uses less digits than its factorization.

2560813809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693079.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 2560813809 is about 50604.4840799706. The cubic root of 2560813809 is about 1368.1256996728.

The spelling of 2560813809 in words is "two billion, five hundred sixty million, eight hundred thirteen thousand, eight hundred nine".