11194863209 has 8 divisors (see below), whose sum is σ = 11716896192. Its totient is φ = 10675771920.

The previous prime is 11194863193. The next prime is 11194863223. The reversal of 11194863209 is 90236849111.

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

It is a cyclic number.

It is not a de Polignac number, because 11194863209 - 2⁴ = 11194863193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11194863209.

It is not an unprimeable number, because it can be changed into a prime (11194863269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727634 + ... + 742859.

It is an arithmetic number, because the mean of its divisors is an integer number (1464612024).

Almost surely, 2^11194863209 is an apocalyptic number.

It is an amenable number.

11194863209 is a deficient number, since it is larger than the sum of its proper divisors (522032983).

11194863209 is a wasteful number, since it uses less digits than its factorization.

11194863209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470847.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 11194863209 in words is "eleven billion, one hundred ninety-four million, eight hundred sixty-three thousand, two hundred nine".