189485 has 4 divisors (see below), whose sum is σ = 227388. Its totient is φ = 151584.

The previous prime is 189479. The next prime is 189491. The reversal of 189485 is 584981.

189485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (189479) and next prime (189491).

It can be written as a sum of positive squares in 2 ways, for example, as 24649 + 164836 = 157^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 189485 - 2⁶ = 189421 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18944 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (56847).

2¹⁸⁹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

189485 is a deficient number, since it is larger than the sum of its proper divisors (37903).

189485 is an equidigital number, since it uses as much as digits as its factorization.

189485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37902.

The product of its digits is 11520, while the sum is 35.

The square root of 189485 is about 435.2987479881. The cubic root of 189485 is about 57.4369819994.

The spelling of 189485 in words is "one hundred eighty-nine thousand, four hundred eighty-five".