128846191 has 2 divisors, whose sum is σ = 128846192. Its totient is φ = 128846190.

The previous prime is 128846153. The next prime is 128846197. The reversal of 128846191 is 191648821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128846191 - 2⁷ = 128846063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128846197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64423095 + 64423096.

It is an arithmetic number, because the mean of its divisors is an integer number (64423096).

Almost surely, 2^128846191 is an apocalyptic number.

128846191 is a deficient number, since it is larger than the sum of its proper divisors (1).

128846191 is an equidigital number, since it uses as much as digits as its factorization.

128846191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 40.

The square root of 128846191 is about 11351.0436084089. The cubic root of 128846191 is about 505.0765377573.

The spelling of 128846191 in words is "one hundred twenty-eight million, eight hundred forty-six thousand, one hundred ninety-one".