2191094 has 8 divisors (see below), whose sum is σ = 3319488. Its totient is φ = 1084600.

The previous prime is 2191087. The next prime is 2191097. The reversal of 2191094 is 4901912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5222 + ... + 5625.

It is an arithmetic number, because the mean of its divisors is an integer number (414936).

2^2191094 is an apocalyptic number.

2191094 is a deficient number, since it is larger than the sum of its proper divisors (1128394).

2191094 is a wasteful number, since it uses less digits than its factorization.

2191094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10950.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2191094 is about 1480.2344408910. The cubic root of 2191094 is about 129.8834063095.

The spelling of 2191094 in words is "two million, one hundred ninety-one thousand, ninety-four".