9730640191 has 2 divisors, whose sum is σ = 9730640192. Its totient is φ = 9730640190.

The previous prime is 9730640173. The next prime is 9730640201. The reversal of 9730640191 is 1910460379.

9730640191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (1910460379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9730640191 - 2⁷ = 9730640063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9730640131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4865320095 + 4865320096.

It is an arithmetic number, because the mean of its divisors is an integer number (4865320096).

Almost surely, 2^9730640191 is an apocalyptic number.

9730640191 is a deficient number, since it is larger than the sum of its proper divisors (1).

9730640191 is an equidigital number, since it uses as much as digits as its factorization.

9730640191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 9730640191 is about 98644.0073750048. The cubic root of 9730640191 is about 2134.9144234941.

The spelling of 9730640191 in words is "nine billion, seven hundred thirty million, six hundred forty thousand, one hundred ninety-one".