194685000061 has 2 divisors, whose sum is σ = 194685000062. Its totient is φ = 194685000060.

The previous prime is 194685000053. The next prime is 194685000101. The reversal of 194685000061 is 160000586491.

194685000061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (194685000101) can be obtained adding 194685000061 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153179087161 + 41505912900 = 391381^2 + 203730^2 .

It is a cyclic number.

It is not a de Polignac number, because 194685000061 - 2³ = 194685000053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194684999978 and 194685000023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194685100061) 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, 97342500030 + 97342500031.

It is an arithmetic number, because the mean of its divisors is an integer number (97342500031).

Almost surely, 2^194685000061 is an apocalyptic number.

It is an amenable number.

194685000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

194685000061 is an equidigital number, since it uses as much as digits as its factorization.

194685000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 194685000061 in words is "one hundred ninety-four billion, six hundred eighty-five million, sixty-one", and thus it is an aban number.