2989138138 has 16 divisors (see below), whose sum is σ = 5125083840. Its totient is φ = 1280847456.

The previous prime is 2989138133. The next prime is 2989138153. The reversal of 2989138138 is 8318319892.

It is a super-2 number, since 2×2989138138² = 17869893616092214088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2989138133) 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, 94773 + ... + 122311.

It is an arithmetic number, because the mean of its divisors is an integer number (320317740).

Almost surely, 2^2989138138 is an apocalyptic number.

2989138138 is a deficient number, since it is larger than the sum of its proper divisors (2135945702).

2989138138 is a wasteful number, since it uses less digits than its factorization.

2989138138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35301.

The product of its digits is 746496, while the sum is 52.

The square root of 2989138138 is about 54673.0110566448. The cubic root of 2989138138 is about 1440.5068525052.

The spelling of 2989138138 in words is "two billion, nine hundred eighty-nine million, one hundred thirty-eight thousand, one hundred thirty-eight".