2184381 has 16 divisors (see below), whose sum is σ = 3427200. Its totient is φ = 1370304.

The previous prime is 2184361. The next prime is 2184389. The reversal of 2184381 is 1834812.

2184381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2184381 - 2⁶ = 2184317 is a prime.

It is a super-2 number, since 2×2184381² = 9543040706322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2184389) by changing a digit.

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, 1921 + ... + 2838.

It is an arithmetic number, because the mean of its divisors is an integer number (214200).

2^2184381 is an apocalyptic number.

It is an amenable number.

2184381 is a deficient number, since it is larger than the sum of its proper divisors (1242819).

2184381 is a wasteful number, since it uses less digits than its factorization.

2184381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785 (or 4779 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 2184381 is about 1477.9651552050. The cubic root of 2184381 is about 129.7506264797.

The spelling of 2184381 in words is "two million, one hundred eighty-four thousand, three hundred eighty-one".