2194169 has 6 divisors (see below), whose sum is σ = 2273310. Its totient is φ = 2117696.

The previous prime is 2194133. The next prime is 2194187. The reversal of 2194169 is 9614912.

It can be written as a sum of positive squares in 3 ways, for example, as 344569 + 1849600 = 587^2 + 1360^2 .

It is not a de Polignac number, because 2194169 - 2²⁰ = 1145593 is a prime.

It is a super-2 number, since 2×2194169² = 9628755201122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2194069) 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 5 ways as a sum of consecutive naturals, for example, 464 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (378885).

2^2194169 is an apocalyptic number.

2194169 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2194169 is a deficient number, since it is larger than the sum of its proper divisors (79141).

2194169 is an equidigital number, since it uses as much as digits as its factorization.

2194169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2638 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 2194169 is about 1481.2727635382. The cubic root of 2194169 is about 129.9441377346.

The spelling of 2194169 in words is "two million, one hundred ninety-four thousand, one hundred sixty-nine".