194130647 has 2 divisors, whose sum is σ = 194130648. Its totient is φ = 194130646.

The previous prime is 194130637. The next prime is 194130683. The reversal of 194130647 is 746031491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194130647 - 2⁴ = 194130631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194130617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97065323 + 97065324.

It is an arithmetic number, because the mean of its divisors is an integer number (97065324).

Almost surely, 2^194130647 is an apocalyptic number.

194130647 is a deficient number, since it is larger than the sum of its proper divisors (1).

194130647 is an equidigital number, since it uses as much as digits as its factorization.

194130647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 194130647 is about 13933.0774418289. The cubic root of 194130647 is about 579.0259582704.

The spelling of 194130647 in words is "one hundred ninety-four million, one hundred thirty thousand, six hundred forty-seven".