2144823156 has 144 divisors (see below), whose sum is σ = 6582925440. Its totient is φ = 574801920.

The previous prime is 2144823097. The next prime is 2144823157. The reversal of 2144823156 is 6513284412.

It is a happy number.

2144823156 is a `hidden beast` number, since 21 + 4 + 482 + 3 + 156 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2144823156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144823157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1622976 + ... + 1624296.

It is an arithmetic number, because the mean of its divisors is an integer number (45714760).

Almost surely, 2^2144823156 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 2144823156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3291462720).

2144823156 is an abundant number, since it is smaller than the sum of its proper divisors (4438102284).

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

2144823156 is a wasteful number, since it uses less digits than its factorization.

2144823156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734 (or 1729 counting only the distinct ones).

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

The square root of 2144823156 is about 46312.2354891232. The cubic root of 2144823156 is about 1289.6261472985.

The spelling of 2144823156 in words is "two billion, one hundred forty-four million, eight hundred twenty-three thousand, one hundred fifty-six".