2144538216 has 96 divisors (see below), whose sum is σ = 6075912960. Its totient is φ = 682045056.

The previous prime is 2144538163. The next prime is 2144538217. The reversal of 2144538216 is 6128354412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2144538217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 765330 + ... + 768126.

It is an arithmetic number, because the mean of its divisors is an integer number (63290760).

Almost surely, 2^2144538216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2144538216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3037956480).

2144538216 is an abundant number, since it is smaller than the sum of its proper divisors (3931374744).

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

2144538216 is a wasteful number, since it uses less digits than its factorization.

2144538216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295 (or 3288 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 2144538216 is about 46309.1590940712. The cubic root of 2144538216 is about 1289.5690357760.

The spelling of 2144538216 in words is "two billion, one hundred forty-four million, five hundred thirty-eight thousand, two hundred sixteen".