189868125 has 40 divisors (see below), whose sum is σ = 319172832. Its totient is φ = 100360000.

The previous prime is 189868123. The next prime is 189868187. The reversal of 189868125 is 521868981.

It is not a de Polignac number, because 189868125 - 2¹ = 189868123 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189868123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 245239 + ... + 246011.

Almost surely, 2^189868125 is an apocalyptic number.

189868125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189868125 is a deficient number, since it is larger than the sum of its proper divisors (129304707).

189868125 is an equidigital number, since it uses as much as digits as its factorization.

189868125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 912 counting only the distinct ones).

The product of its digits is 276480, while the sum is 48.

The square root of 189868125 is about 13779.2643127273. The cubic root of 189868125 is about 574.7566708292.

The spelling of 189868125 in words is "one hundred eighty-nine million, eight hundred sixty-eight thousand, one hundred twenty-five".