189644485 has 8 divisors (see below), whose sum is σ = 235420920. Its totient is φ = 146483904.

The previous prime is 189644471. The next prime is 189644513. The reversal of 189644485 is 584446981.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 77475204 + 112169281 = 8802^2 + 10591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189644485 - 2⁹ = 189643973 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 653802 + ... + 654091.

It is an arithmetic number, because the mean of its divisors is an integer number (29427615).

Almost surely, 2^189644485 is an apocalyptic number.

It is an amenable number.

189644485 is a deficient number, since it is larger than the sum of its proper divisors (45776435).

189644485 is a wasteful number, since it uses less digits than its factorization.

189644485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307927.

The product of its digits is 1105920, while the sum is 49.

The square root of 189644485 is about 13771.1468295128. The cubic root of 189644485 is about 574.5309192588.

The spelling of 189644485 in words is "one hundred eighty-nine million, six hundred forty-four thousand, four hundred eighty-five".