194507775827 has 2 divisors, whose sum is σ = 194507775828. Its totient is φ = 194507775826.

The previous prime is 194507775823. The next prime is 194507775829. The reversal of 194507775827 is 728577705491.

194507775827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (728577705491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194507775827 - 2² = 194507775823 is a prime.

Together with 194507775829, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194507775827.

It is not a weakly prime, because it can be changed into another prime (194507775823) 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 as a sum of consecutive naturals, namely, 97253887913 + 97253887914.

It is an arithmetic number, because the mean of its divisors is an integer number (97253887914).

Almost surely, 2^194507775827 is an apocalyptic number.

194507775827 is a deficient number, since it is larger than the sum of its proper divisors (1).

194507775827 is an equidigital number, since it uses as much as digits as its factorization.

194507775827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34574400, while the sum is 62.

The spelling of 194507775827 in words is "one hundred ninety-four billion, five hundred seven million, seven hundred seventy-five thousand, eight hundred twenty-seven".