2889438138 has 24 divisors (see below), whose sum is σ = 6282739476. Its totient is φ = 959716800.

The previous prime is 2889438121. The next prime is 2889438187. The reversal of 2889438138 is 8318349882.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2876927769 + 12510369 = 53637^2 + 3537^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 280573 + ... + 290688.

Almost surely, 2^2889438138 is an apocalyptic number.

2889438138 is an abundant number, since it is smaller than the sum of its proper divisors (3393301338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2889438138 is a wasteful number, since it uses less digits than its factorization.

2889438138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571550 (or 571547 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 2889438138 is about 53753.4941934010. The cubic root of 2889438138 is about 1424.3098146149.

The spelling of 2889438138 in words is "two billion, eight hundred eighty-nine million, four hundred thirty-eight thousand, one hundred thirty-eight".