9194000861 has 2 divisors, whose sum is σ = 9194000862. Its totient is φ = 9194000860.

The previous prime is 9194000813. The next prime is 9194000867. The reversal of 9194000861 is 1680004919.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5746549636 + 3447451225 = 75806^2 + 58715^2 .

It is an emirp because it is prime and its reverse (1680004919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9194000861 - 2⁶ = 9194000797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9194000867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4597000430 + 4597000431.

It is an arithmetic number, because the mean of its divisors is an integer number (4597000431).

Almost surely, 2^9194000861 is an apocalyptic number.

It is an amenable number.

9194000861 is a deficient number, since it is larger than the sum of its proper divisors (1).

9194000861 is an equidigital number, since it uses as much as digits as its factorization.

9194000861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 9194000861 is about 95885.3526926819. The cubic root of 9194000861 is about 2094.9235554800.

The spelling of 9194000861 in words is "nine billion, one hundred ninety-four million, eight hundred sixty-one", and thus it is an aban number.