2191834 has 8 divisors (see below), whose sum is σ = 3294720. Its totient is φ = 1093596.

The previous prime is 2191823. The next prime is 2191873. The reversal of 2191834 is 4381912.

It is a happy number.

2191834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 3 ways as a sum of consecutive naturals, for example, 487 + ... + 2149.

It is an arithmetic number, because the mean of its divisors is an integer number (411840).

2^2191834 is an apocalyptic number.

2191834 is a deficient number, since it is larger than the sum of its proper divisors (1102886).

2191834 is a wasteful number, since it uses less digits than its factorization.

2191834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its digits is 1728, while the sum is 28.

The square root of 2191834 is about 1480.4843801945. The cubic root of 2191834 is about 129.8980265407.

It can be divided in two parts, 21918 and 34, that added together give a cube (21952 = 28³).

The spelling of 2191834 in words is "two million, one hundred ninety-one thousand, eight hundred thirty-four".