189606109 has 16 divisors (see below), whose sum is σ = 237404160. Its totient is φ = 147112560.

The previous prime is 189606107. The next prime is 189606121. The reversal of 189606109 is 901606981.

It is not a de Polignac number, because 189606109 - 2¹ = 189606107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189606103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13252 + ... + 23554.

It is an arithmetic number, because the mean of its divisors is an integer number (14837760).

Almost surely, 2^189606109 is an apocalyptic number.

It is an amenable number.

189606109 is a deficient number, since it is larger than the sum of its proper divisors (47798051).

189606109 is a wasteful number, since it uses less digits than its factorization.

189606109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 189606109 is about 13769.7534110092. The cubic root of 189606109 is about 574.4921630814.

The spelling of 189606109 in words is "one hundred eighty-nine million, six hundred six thousand, one hundred nine".