194909888195 has 64 divisors (see below), whose sum is σ = 268894080000. Its totient is φ = 134248266240.

The previous prime is 194909888189. The next prime is 194909888221. The reversal of 194909888195 is 591888909491.

194909888195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 441486²-1.

It is not a de Polignac number, because 194909888195 - 2¹⁰ = 194909887171 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 65779784 + ... + 65782746.

It is an arithmetic number, because the mean of its divisors is an integer number (4201470000).

Almost surely, 2^194909888195 is an apocalyptic number.

194909888195 is a deficient number, since it is larger than the sum of its proper divisors (73984191805).

194909888195 is a wasteful number, since it uses less digits than its factorization.

194909888195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500.

The product of its (nonzero) digits is 67184640, while the sum is 71.

The spelling of 194909888195 in words is "one hundred ninety-four billion, nine hundred nine million, eight hundred eighty-eight thousand, one hundred ninety-five".