194209806 has 32 divisors (see below), whose sum is σ = 445086720. Its totient is φ = 55341216.

The previous prime is 194209789. The next prime is 194209817. The reversal of 194209806 is 608902491.

It is a congruent number.

It is an unprimeable number.

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, 10395 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (13908960).

Almost surely, 2^194209806 is an apocalyptic number.

194209806 is an abundant number, since it is smaller than the sum of its proper divisors (250876914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194209806 is a wasteful number, since it uses less digits than its factorization.

194209806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12288.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 194209806 is about 13935.9178384490. The cubic root of 194209806 is about 579.1046490696.

The spelling of 194209806 in words is "one hundred ninety-four million, two hundred nine thousand, eight hundred six".