189245585 has 4 divisors (see below), whose sum is σ = 227094708. Its totient is φ = 151396464.

The previous prime is 189245557. The next prime is 189245591. The reversal of 189245585 is 585542981.

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 98386561 + 90859024 = 9919^2 + 9532^2 .

It is a cyclic number.

It is not a de Polignac number, because 189245585 - 2⁶ = 189245521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 18924554 + ... + 18924563.

It is an arithmetic number, because the mean of its divisors is an integer number (56773677).

Almost surely, 2^189245585 is an apocalyptic number.

It is an amenable number.

189245585 is a deficient number, since it is larger than the sum of its proper divisors (37849123).

189245585 is an equidigital number, since it uses as much as digits as its factorization.

189245585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37849122.

The product of its digits is 576000, while the sum is 47.

The square root of 189245585 is about 13756.6560253573. The cubic root of 189245585 is about 574.1278119069.

The spelling of 189245585 in words is "one hundred eighty-nine million, two hundred forty-five thousand, five hundred eighty-five".