2194 has 4 divisors (see below), whose sum is σ = 3294.
Its totient is φ = 1096.
The previous prime is 2179. The next prime is 2203. The reversal of 2194 is 4912.
It can be divided in two parts, 2 and 194, that added together give a square (196 = 142).
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 2025 + 169 = 45^2 + 13^2
It is a d-powerful number, because it can be written as 211 + 92 + 1 + 43 .
It is a nialpdrome in base 8 and base 13.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547 + ... + 550.
2194 is a deficient number, since it is larger than the sum of its proper divisors (1100).
2194 is a wasteful number, since it uses less digits than its factorization.
2194 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1099.
The product of its digits is 72, while the sum is 16.
The square root of 2194 is about 46.8401537145.
The cubic root of 2194 is about 12.9940801449.
The spelling of 2194 in words is "two thousand, one hundred ninety-four".