4128189191 has 16 divisors (see below), whose sum is σ = 4817736000. Its totient is φ = 3535860384.

The previous prime is 4128189127. The next prime is 4128189193. The reversal of 4128189191 is 1919818214.

It is not a de Polignac number, because 4128189191 - 2⁶ = 4128189127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128189193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577145 + ... + 584253.

It is an arithmetic number, because the mean of its divisors is an integer number (301108500).

Almost surely, 2^4128189191 is an apocalyptic number.

4128189191 is a deficient number, since it is larger than the sum of its proper divisors (689546809).

4128189191 is an equidigital number, since it uses as much as digits as its factorization.

4128189191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8823 (or 8809 counting only the distinct ones).

The product of its digits is 41472, while the sum is 44.

The square root of 4128189191 is about 64250.9859146146. The cubic root of 4128189191 is about 1604.1803692200.

The spelling of 4128189191 in words is "four billion, one hundred twenty-eight million, one hundred eighty-nine thousand, one hundred ninety-one".