2871137889 has 27 divisors (see below), whose sum is σ = 4239504633. Its totient is φ = 1872404352.

The previous prime is 2871137887. The next prime is 2871137897. The reversal of 2871137889 is 9887311782.

It is a happy number.

The square root of 2871137889 is 53583.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 321489 + 2870816400 = 567^2 + 53580^2 .

It is not a de Polignac number, because 2871137889 - 2¹ = 2871137887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2871137887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8519529 + ... + 8519865.

Almost surely, 2^2871137889 is an apocalyptic number.

2871137889 is the 53583-rd square number.

2871137889 is the 26792-nd centered octagonal number.

It is an amenable number.

2871137889 is a deficient number, since it is larger than the sum of its proper divisors (1368366744).

2871137889 is an frugal number, since it uses more digits than its factorization.

2871137889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 393 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The cubic root of 2871137889 is about 1421.2964898246.

The spelling of 2871137889 in words is "two billion, eight hundred seventy-one million, one hundred thirty-seven thousand, eight hundred eighty-nine".