10128191 has 2 divisors, whose sum is σ = 10128192. Its totient is φ = 10128190.

The previous prime is 10128187. The next prime is 10128193. The reversal of 10128191 is 19182101.

It is a strong prime.

It is an emirp because it is prime and its reverse (19182101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10128191 - 2² = 10128187 is a prime.

Together with 10128193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10128193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064095 + 5064096.

It is an arithmetic number, because the mean of its divisors is an integer number (5064096).

Almost surely, 2^10128191 is an apocalyptic number.

10128191 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128191 is an equidigital number, since it uses as much as digits as its factorization.

10128191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 10128191 is about 3182.4818931142. The cubic root of 10128191 is about 216.3601601633.

The spelling of 10128191 in words is "ten million, one hundred twenty-eight thousand, one hundred ninety-one".