2539832865 has 16 divisors (see below), whose sum is σ = 4066210368. Its totient is φ = 1353751616.

The previous prime is 2539832849. The next prime is 2539832873. The reversal of 2539832865 is 5682389352.

It is a cyclic number.

It is not a de Polignac number, because 2539832865 - 2⁴ = 2539832849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25782 + ... + 75791.

It is an arithmetic number, because the mean of its divisors is an integer number (254138148).

Almost surely, 2^2539832865 is an apocalyptic number.

It is an amenable number.

2539832865 is a deficient number, since it is larger than the sum of its proper divisors (1526377503).

2539832865 is a wasteful number, since it uses less digits than its factorization.

2539832865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103248.

The product of its digits is 3110400, while the sum is 51.

The square root of 2539832865 is about 50396.7545085991. The cubic root of 2539832865 is about 1364.3790625318.

The spelling of 2539832865 in words is "two billion, five hundred thirty-nine million, eight hundred thirty-two thousand, eight hundred sixty-five".