194532206917 has 2 divisors, whose sum is σ = 194532206918. Its totient is φ = 194532206916.

The previous prime is 194532206899. The next prime is 194532206929. The reversal of 194532206917 is 719602235491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194292297796 + 239909121 = 440786^2 + 15489^2 .

It is a cyclic number.

It is not a de Polignac number, because 194532206917 - 2⁷ = 194532206789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194532206987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97266103458 + 97266103459.

It is an arithmetic number, because the mean of its divisors is an integer number (97266103459).

Almost surely, 2^194532206917 is an apocalyptic number.

It is an amenable number.

194532206917 is a deficient number, since it is larger than the sum of its proper divisors (1).

194532206917 is an equidigital number, since it uses as much as digits as its factorization.

194532206917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 194532206917 in words is "one hundred ninety-four billion, five hundred thirty-two million, two hundred six thousand, nine hundred seventeen".