2194449009 has 16 divisors (see below), whose sum is σ = 2982897600. Its totient is φ = 1434606336.

The previous prime is 2194449001. The next prime is 2194449013. The reversal of 2194449009 is 9009444912.

It is not a de Polignac number, because 2194449009 - 2³ = 2194449001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2194449001) 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 15 ways as a sum of consecutive naturals, for example, 57237 + ... + 87549.

It is an arithmetic number, because the mean of its divisors is an integer number (186431100).

Almost surely, 2^2194449009 is an apocalyptic number.

It is an amenable number.

2194449009 is a deficient number, since it is larger than the sum of its proper divisors (788448591).

2194449009 is a wasteful number, since it uses less digits than its factorization.

2194449009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30784.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2194449009 is about 46844.9464617049. The cubic root of 2194449009 is about 1299.4966510894.

The spelling of 2194449009 in words is "two billion, one hundred ninety-four million, four hundred forty-nine thousand, nine".