128416189 has 16 divisors (see below), whose sum is σ = 145119744. Its totient is φ = 112618800.

The previous prime is 128416151. The next prime is 128416201. The reversal of 128416189 is 981614821.

It is a cyclic number.

It is not a de Polignac number, because 128416189 - 2¹⁷ = 128285117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128416129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37624 + ... + 40894.

It is an arithmetic number, because the mean of its divisors is an integer number (9069984).

Almost surely, 2^128416189 is an apocalyptic number.

It is an amenable number.

128416189 is a deficient number, since it is larger than the sum of its proper divisors (16703555).

128416189 is a wasteful number, since it uses less digits than its factorization.

128416189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408.

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

The square root of 128416189 is about 11332.0867010450. The cubic root of 128416189 is about 504.5140428598.

The spelling of 128416189 in words is "one hundred twenty-eight million, four hundred sixteen thousand, one hundred eighty-nine".