2161144050 has 96 divisors (see below), whose sum is σ = 5786088000. Its totient is φ = 530668800.

The previous prime is 2161144031. The next prime is 2161144109. The reversal of 2161144050 is 504411612.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2161144050.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 971940 + ... + 974160.

It is an arithmetic number, because the mean of its divisors is an integer number (60271750).

Almost surely, 2^2161144050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161144050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2893044000).

2161144050 is an abundant number, since it is smaller than the sum of its proper divisors (3624943950).

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

2161144050 is a wasteful number, since it uses less digits than its factorization.

2161144050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2743 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2161144050 is about 46488.1065435021. The cubic root of 2161144050 is about 1292.8889942021. Note that the first 3 decimals are identical.

Adding to 2161144050 its reverse (504411612), we get a palindrome (2665555662).

The spelling of 2161144050 in words is "two billion, one hundred sixty-one million, one hundred forty-four thousand, fifty".