209444792198 has 16 divisors (see below), whose sum is σ = 334336188384. Its totient is φ = 98061936000.

The previous prime is 209444792191. The next prime is 209444792213. The reversal of 209444792198 is 891297444902.

209444792198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209444792191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15628178 + ... + 15641573.

It is an arithmetic number, because the mean of its divisors is an integer number (20896011774).

Almost surely, 2^209444792198 is an apocalyptic number.

209444792198 is a deficient number, since it is larger than the sum of its proper divisors (124891396186).

209444792198 is a wasteful number, since it uses less digits than its factorization.

209444792198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31269967.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 209444792198 in words is "two hundred nine billion, four hundred forty-four million, seven hundred ninety-two thousand, one hundred ninety-eight".