194790080219 has 4 divisors (see below), whose sum is σ = 222617234544. Its totient is φ = 166962925896.

The previous prime is 194790080213. The next prime is 194790080227. The reversal of 194790080219 is 912080097491.

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

It is a cyclic number.

It is not a de Polignac number, because 194790080219 - 2²⁴ = 194773303003 is a prime.

It is a super-2 number, since 2×194790080219² (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 (194790080213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13913577152 + ... + 13913577165.

It is an arithmetic number, because the mean of its divisors is an integer number (55654308636).

Almost surely, 2^194790080219 is an apocalyptic number.

194790080219 is a deficient number, since it is larger than the sum of its proper divisors (27827154325).

194790080219 is an equidigital number, since it uses as much as digits as its factorization.

194790080219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27827154324.

The product of its (nonzero) digits is 326592, while the sum is 50.

The spelling of 194790080219 in words is "one hundred ninety-four billion, seven hundred ninety million, eighty thousand, two hundred nineteen".