128093591 has 2 divisors, whose sum is σ = 128093592. Its totient is φ = 128093590.

The previous prime is 128093561. The next prime is 128093621. The reversal of 128093591 is 195390821.

It is a balanced prime because it is at equal distance from previous prime (128093561) and next prime (128093621).

It is a cyclic number.

It is not a de Polignac number, because 128093591 - 2¹⁴ = 128077207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128093501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64046795 + 64046796.

It is an arithmetic number, because the mean of its divisors is an integer number (64046796).

Almost surely, 2^128093591 is an apocalyptic number.

128093591 is a deficient number, since it is larger than the sum of its proper divisors (1).

128093591 is an equidigital number, since it uses as much as digits as its factorization.

128093591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 128093591 is about 11317.8439201113. The cubic root of 128093591 is about 504.0912205237.

The spelling of 128093591 in words is "one hundred twenty-eight million, ninety-three thousand, five hundred ninety-one".