2009194 has 16 divisors (see below), whose sum is σ = 3309696. Its totient is φ = 907200.

The previous prime is 2009191. The next prime is 2009209. The reversal of 2009194 is 4919002.

It is not an unprimeable number, because it can be changed into a prime (2009191) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5794 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (206856).

2^2009194 is an apocalyptic number.

2009194 is a deficient number, since it is larger than the sum of its proper divisors (1300502).

2009194 is a wasteful number, since it uses less digits than its factorization.

2009194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2009194 is about 1417.4604050907. The cubic root of 2009194 is about 126.1848718097.

The spelling of 2009194 in words is "two million, nine thousand, one hundred ninety-four".