448538191 has 2 divisors, whose sum is σ = 448538192. Its totient is φ = 448538190.

The previous prime is 448538179. The next prime is 448538197. The reversal of 448538191 is 191835844.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 448538191 - 2⁹ = 448537679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448538197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224269095 + 224269096.

It is an arithmetic number, because the mean of its divisors is an integer number (224269096).

Almost surely, 2^448538191 is an apocalyptic number.

448538191 is a deficient number, since it is larger than the sum of its proper divisors (1).

448538191 is an equidigital number, since it uses as much as digits as its factorization.

448538191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The square root of 448538191 is about 21178.7202399012. The cubic root of 448538191 is about 765.4787559540.

The spelling of 448538191 in words is "four hundred forty-eight million, five hundred thirty-eight thousand, one hundred ninety-one".