194090662091 has 2 divisors, whose sum is σ = 194090662092. Its totient is φ = 194090662090.

The previous prime is 194090662043. The next prime is 194090662093. The reversal of 194090662091 is 190266090491.

194090662091 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 194090662091 - 2⁶ = 194090662027 is a prime.

It is a super-2 number, since 2×194090662091² (a number of 23 digits) contains 22 as substring.

Together with 194090662093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194090662093) 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, 97045331045 + 97045331046.

It is an arithmetic number, because the mean of its divisors is an integer number (97045331046).

Almost surely, 2^194090662091 is an apocalyptic number.

194090662091 is a deficient number, since it is larger than the sum of its proper divisors (1).

194090662091 is an equidigital number, since it uses as much as digits as its factorization.

194090662091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 194090662091 in words is "one hundred ninety-four billion, ninety million, six hundred sixty-two thousand, ninety-one".