2889668889 has 12 divisors (see below), whose sum is σ = 4275770772. Its totient is φ = 1879459200.

The previous prime is 2889668879. The next prime is 2889668893. The reversal of 2889668889 is 9888669882.

2889668889 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 177342489 + 2712326400 = 13317^2 + 52080^2 .

It is not a de Polignac number, because 2889668889 - 2¹¹ = 2889666841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2889668869) 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, 3915172 + ... + 3915909.

It is an arithmetic number, because the mean of its divisors is an integer number (356314231).

Almost surely, 2^2889668889 is an apocalyptic number.

It is an amenable number.

2889668889 is a deficient number, since it is larger than the sum of its proper divisors (1386101883).

2889668889 is a wasteful number, since it uses less digits than its factorization.

2889668889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7831128 (or 7831125 counting only the distinct ones).

The product of its digits is 191102976, while the sum is 72.

The square root of 2889668889 is about 53755.6405319479. The cubic root of 2889668889 is about 1424.3477288102.

The spelling of 2889668889 in words is "two billion, eight hundred eighty-nine million, six hundred sixty-eight thousand, eight hundred eighty-nine".