2161382244 has 48 divisors (see below), whose sum is σ = 6102730368. Its totient is φ = 581211648.

The previous prime is 2161382239. The next prime is 2161382257. The reversal of 2161382244 is 4422831612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755359 + ... + 758214.

It is an arithmetic number, because the mean of its divisors is an integer number (127140216).

Almost surely, 2^2161382244 is an apocalyptic number.

It is an amenable number.

2161382244 is an abundant number, since it is smaller than the sum of its proper divisors (3941348124).

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

2161382244 is a wasteful number, since it uses less digits than its factorization.

2161382244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513604 (or 1513602 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 2161382244 is about 46490.6683539826. The cubic root of 2161382244 is about 1292.9364917436.

The spelling of 2161382244 in words is "two billion, one hundred sixty-one million, three hundred eighty-two thousand, two hundred forty-four".