194201897219 has 16 divisors (see below), whose sum is σ = 216532279296. Its totient is φ = 172689955200.

The previous prime is 194201897191. The next prime is 194201897233. The reversal of 194201897219 is 912798102491.

It is a happy number.

194201897219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 194201897219 - 2⁸ = 194201896963 is a prime.

It is a super-2 number, since 2×194201897219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194201897249) 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 15 ways as a sum of consecutive naturals, for example, 879782 + ... + 1078155.

It is an arithmetic number, because the mean of its divisors is an integer number (13533267456).

Almost surely, 2^194201897219 is an apocalyptic number.

194201897219 is a deficient number, since it is larger than the sum of its proper divisors (22330382077).

194201897219 is a wasteful number, since it uses less digits than its factorization.

194201897219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958146.

The product of its (nonzero) digits is 653184, while the sum is 53.

The spelling of 194201897219 in words is "one hundred ninety-four billion, two hundred one million, eight hundred ninety-seven thousand, two hundred nineteen".