2139889312 has 48 divisors (see below), whose sum is σ = 4609332000. Its totient is φ = 969834240.

The previous prime is 2139889309. The next prime is 2139889313.

2139889312 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2139889312² = 9158252535223666688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2139889313) 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, 114139 + ... + 131557.

It is an arithmetic number, because the mean of its divisors is an integer number (96027750).

Almost surely, 2^2139889312 is an apocalyptic number.

2139889312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139889312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2304666000).

2139889312 is an abundant number, since it is smaller than the sum of its proper divisors (2469442688).

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

2139889312 is a wasteful number, since it uses less digits than its factorization.

2139889312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17789 (or 17781 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 2139889312 is about 46258.9376445244. The cubic root of 2139889312 is about 1288.6365242371.

The spelling of 2139889312 in words is "two billion, one hundred thirty-nine million, eight hundred eighty-nine thousand, three hundred twelve".