189874125 has 192 divisors, whose sum is σ = 436101120. Its totient is φ = 80481600.

The previous prime is 189874117. The next prime is 189874129. The reversal of 189874125 is 521478981.

It is not a de Polignac number, because 189874125 - 2³ = 189874117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189874129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4039852 + ... + 4039898.

It is an arithmetic number, because the mean of its divisors is an integer number (2271360).

Almost surely, 2^189874125 is an apocalyptic number.

189874125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189874125 is an abundant number, since it is smaller than the sum of its proper divisors (246226995).

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

189874125 is an equidigital number, since it uses as much as digits as its factorization.

189874125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 81 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 189874125 is about 13779.4820294523. The cubic root of 189874125 is about 574.7627250378.

The spelling of 189874125 in words is "one hundred eighty-nine million, eight hundred seventy-four thousand, one hundred twenty-five".