2560803243 has 12 divisors (see below), whose sum is σ = 3425266728. Its totient is φ = 1701777600.

The previous prime is 2560803239. The next prime is 2560803247. The reversal of 2560803243 is 3423080652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2560803239) and next prime (2560803247).

It is not a de Polignac number, because 2560803243 - 2² = 2560803239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2560803247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1754448 + ... + 1755906.

It is an arithmetic number, because the mean of its divisors is an integer number (285438894).

Almost surely, 2^2560803243 is an apocalyptic number.

2560803243 is a deficient number, since it is larger than the sum of its proper divisors (864463485).

2560803243 is an frugal number, since it uses more digits than its factorization.

2560803243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2560803243 is about 50604.3796819999. The cubic root of 2560803243 is about 1368.1238180266.

Adding to 2560803243 its reverse (3423080652), we get a palindrome (5983883895).

The spelling of 2560803243 in words is "two billion, five hundred sixty million, eight hundred three thousand, two hundred forty-three".