194188698061 has 2 divisors, whose sum is σ = 194188698062. Its totient is φ = 194188698060.

The previous prime is 194188698037. The next prime is 194188698083. The reversal of 194188698061 is 160896881491.

194188698061 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 can be written as a sum of positive squares in only one way, i.e., 103873422436 + 90315275625 = 322294^2 + 300525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194188698061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194188698031) 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, 97094349030 + 97094349031.

It is an arithmetic number, because the mean of its divisors is an integer number (97094349031).

Almost surely, 2^194188698061 is an apocalyptic number.

It is an amenable number.

194188698061 is a deficient number, since it is larger than the sum of its proper divisors (1).

194188698061 is an equidigital number, since it uses as much as digits as its factorization.

194188698061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 61.

The spelling of 194188698061 in words is "one hundred ninety-four billion, one hundred eighty-eight million, six hundred ninety-eight thousand, sixty-one".