2144891 has 8 divisors (see below), whose sum is σ = 2580480. Its totient is φ = 1741608.

The previous prime is 2144867. The next prime is 2144893. The reversal of 2144891 is 1984412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2144891 - 2¹⁸ = 1882747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7931 + ... + 8196.

It is an arithmetic number, because the mean of its divisors is an integer number (322560).

2^2144891 is an apocalyptic number.

2144891 is a deficient number, since it is larger than the sum of its proper divisors (435589).

2144891 is a wasteful number, since it uses less digits than its factorization.

2144891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16153.

The product of its digits is 2304, while the sum is 29.

The square root of 2144891 is about 1464.5446391285. The cubic root of 2144891 is about 128.9639744764.

The spelling of 2144891 in words is "two million, one hundred forty-four thousand, eight hundred ninety-one".