2161924344 has 96 divisors (see below), whose sum is σ = 6100523520. Its totient is φ = 717266016.

The previous prime is 2161924343. The next prime is 2161924381. The reversal of 2161924344 is 4434291612.

2161924344 is a `hidden beast` number, since 2 + 1 + 619 + 2 + 4 + 34 + 4 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2161924299 and 2161924308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161924343) 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, 431019 + ... + 436005.

It is an arithmetic number, because the mean of its divisors is an integer number (63547120).

Almost surely, 2^2161924344 is an apocalyptic number.

2161924344 is a gapful number since it is divisible by the number (24) 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 2161924344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3050261760).

2161924344 is an abundant number, since it is smaller than the sum of its proper divisors (3938599176).

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

2161924344 is a wasteful number, since it uses less digits than its factorization.

2161924344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231 (or 5215 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2161924344 is about 46496.4981907240. The cubic root of 2161924344 is about 1293.0445772499.

The spelling of 2161924344 in words is "two billion, one hundred sixty-one million, nine hundred twenty-four thousand, three hundred forty-four".