2580645868 has 24 divisors (see below), whose sum is σ = 4548600000. Its totient is φ = 1281078288.

The previous prime is 2580645863. The next prime is 2580645887. The reversal of 2580645868 is 8685460852.

It is not an unprimeable number, because it can be changed into a prime (2580645863) 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 7 ways as a sum of consecutive naturals, for example, 340383 + ... + 347881.

It is an arithmetic number, because the mean of its divisors is an integer number (189525000).

Almost surely, 2^2580645868 is an apocalyptic number.

It is an amenable number.

2580645868 is a deficient number, since it is larger than the sum of its proper divisors (1967954132).

2580645868 is a wasteful number, since it uses less digits than its factorization.

2580645868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109 (or 8107 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 52.

The square root of 2580645868 is about 50800.0577558727. The cubic root of 2580645868 is about 1371.6484088331.

The spelling of 2580645868 in words is "two billion, five hundred eighty million, six hundred forty-five thousand, eight hundred sixty-eight".