189938106 has 12 divisors (see below), whose sum is σ = 411532602. Its totient is φ = 63312696.

The previous prime is 189938087. The next prime is 189938143. The reversal of 189938106 is 601839981.

It can be written as a sum of positive squares in only one way, i.e., 186076881 + 3861225 = 13641^2 + 1965^2 .

It is a super-2 number, since 2×189938106² = 72152968221734472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5276041 + ... + 5276076.

Almost surely, 2^189938106 is an apocalyptic number.

189938106 is an abundant number, since it is smaller than the sum of its proper divisors (221594496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189938106 is a wasteful number, since it uses less digits than its factorization.

189938106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552125 (or 10552122 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 189938106 is about 13781.8034378669. The cubic root of 189938106 is about 574.8272761611.

The spelling of 189938106 in words is "one hundred eighty-nine million, nine hundred thirty-eight thousand, one hundred six".