2989566138 has 16 divisors (see below), whose sum is σ = 6439065696. Its totient is φ = 919866480.

The previous prime is 2989566137. The next prime is 2989566143. The reversal of 2989566138 is 8316659892.

It is not an unprimeable number, because it can be changed into a prime (2989566133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19163808 + ... + 19163963.

It is an arithmetic number, because the mean of its divisors is an integer number (402441606).

Almost surely, 2^2989566138 is an apocalyptic number.

2989566138 is an abundant number, since it is smaller than the sum of its proper divisors (3449499558).

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

2989566138 is a wasteful number, since it uses less digits than its factorization.

2989566138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38327789.

The product of its digits is 5598720, while the sum is 57.

The square root of 2989566138 is about 54676.9250964244. The cubic root of 2989566138 is about 1440.5756022563.

The spelling of 2989566138 in words is "two billion, nine hundred eighty-nine million, five hundred sixty-six thousand, one hundred thirty-eight".