194323695187 has 2 divisors, whose sum is σ = 194323695188. Its totient is φ = 194323695186.

The previous prime is 194323695173. The next prime is 194323695193. The reversal of 194323695187 is 781596323491.

It is a happy number.

194323695187 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 a cyclic number.

It is not a de Polignac number, because 194323695187 - 2¹⁵ = 194323662419 is a prime.

It is a super-2 number, since 2×194323695187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194323795187) 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, 97161847593 + 97161847594.

It is an arithmetic number, because the mean of its divisors is an integer number (97161847594).

Almost surely, 2^194323695187 is an apocalyptic number.

194323695187 is a deficient number, since it is larger than the sum of its proper divisors (1).

194323695187 is an equidigital number, since it uses as much as digits as its factorization.

194323695187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 58.

The spelling of 194323695187 in words is "one hundred ninety-four billion, three hundred twenty-three million, six hundred ninety-five thousand, one hundred eighty-seven".