189648185 has 4 divisors (see below), whose sum is σ = 227577828. Its totient is φ = 151718544.

The previous prime is 189648163. The next prime is 189648187. The reversal of 189648185 is 581846981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69438889 + 120209296 = 8333^2 + 10964^2 .

It is a cyclic number.

It is not a de Polignac number, because 189648185 - 2⁸ = 189647929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189648187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18964814 + ... + 18964823.

It is an arithmetic number, because the mean of its divisors is an integer number (56894457).

Almost surely, 2^189648185 is an apocalyptic number.

It is an amenable number.

189648185 is a deficient number, since it is larger than the sum of its proper divisors (37929643).

189648185 is an equidigital number, since it uses as much as digits as its factorization.

189648185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37929642.

The product of its digits is 552960, while the sum is 50.

The square root of 189648185 is about 13771.2811677055. The cubic root of 189648185 is about 574.5346556370.

The spelling of 189648185 in words is "one hundred eighty-nine million, six hundred forty-eight thousand, one hundred eighty-five".