194819201 has 4 divisors (see below), whose sum is σ = 206279172. Its totient is φ = 183359232.

The previous prime is 194819173. The next prime is 194819213. The reversal of 194819201 is 102918491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103042801 + 91776400 = 10151^2 + 9580^2 .

It is a cyclic number.

It is not a de Polignac number, because 194819201 - 2⁶ = 194819137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194819281) 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 3 ways as a sum of consecutive naturals, for example, 5729960 + ... + 5729993.

It is an arithmetic number, because the mean of its divisors is an integer number (51569793).

Almost surely, 2^194819201 is an apocalyptic number.

It is an amenable number.

194819201 is a deficient number, since it is larger than the sum of its proper divisors (11459971).

194819201 is a wasteful number, since it uses less digits than its factorization.

194819201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11459970.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 194819201 is about 13957.7648998685. The cubic root of 194819201 is about 579.7097249433.

It can be divided in two parts, 19481 and 9201, that added together give a palindrome (28682).

The spelling of 194819201 in words is "one hundred ninety-four million, eight hundred nineteen thousand, two hundred one".