194080111 has 2 divisors, whose sum is σ = 194080112. Its totient is φ = 194080110.

The previous prime is 194080097. The next prime is 194080127. The reversal of 194080111 is 111080491.

It is a weak prime.

It is an emirp because it is prime and its reverse (111080491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194080111 - 2⁷ = 194079983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194380111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97040055 + 97040056.

It is an arithmetic number, because the mean of its divisors is an integer number (97040056).

Almost surely, 2^194080111 is an apocalyptic number.

194080111 is a deficient number, since it is larger than the sum of its proper divisors (1).

194080111 is an equidigital number, since it uses as much as digits as its factorization.

194080111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 194080111 is about 13931.2637976603. The cubic root of 194080111 is about 578.9757099869.

The spelling of 194080111 in words is "one hundred ninety-four million, eighty thousand, one hundred eleven".