2578831871 has 16 divisors (see below), whose sum is σ = 3251301120. Its totient is φ = 1986895680.

The previous prime is 2578831841. The next prime is 2578831903. The reversal of 2578831871 is 1781388752.

It is not a de Polignac number, because 2578831871 - 2⁶ = 2578831807 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 (2578831811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181301 + ... + 195006.

It is an arithmetic number, because the mean of its divisors is an integer number (203206320).

Almost surely, 2^2578831871 is an apocalyptic number.

2578831871 is a deficient number, since it is larger than the sum of its proper divisors (672469249).

2578831871 is a wasteful number, since it uses less digits than its factorization.

2578831871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376414.

The product of its digits is 752640, while the sum is 50.

The square root of 2578831871 is about 50782.2003363383. The cubic root of 2578831871 is about 1371.3269454668.

The spelling of 2578831871 in words is "two billion, five hundred seventy-eight million, eight hundred thirty-one thousand, eight hundred seventy-one".