189125189 has 4 divisors (see below), whose sum is σ = 206318400. Its totient is φ = 171931980.

The previous prime is 189125179. The next prime is 189125191. The reversal of 189125189 is 981521981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981521981 = 11 ⋅89229271.

It is not a de Polignac number, because 189125189 - 2⁴ = 189125173 is a prime.

It is a super-2 number, since 2×189125189² = 71536674228571442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189125129) 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 3 ways as a sum of consecutive naturals, for example, 8596589 + ... + 8596610.

It is an arithmetic number, because the mean of its divisors is an integer number (51579600).

Almost surely, 2^189125189 is an apocalyptic number.

It is an amenable number.

189125189 is a deficient number, since it is larger than the sum of its proper divisors (17193211).

189125189 is a wasteful number, since it uses less digits than its factorization.

189125189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17193210.

The product of its digits is 51840, while the sum is 44.

The square root of 189125189 is about 13752.2794110649. The cubic root of 189125189 is about 574.0060347717.

The spelling of 189125189 in words is "one hundred eighty-nine million, one hundred twenty-five thousand, one hundred eighty-nine".