655488189 has 48 divisors (see below), whose sum is σ = 1017244800. Its totient is φ = 405917568.

The previous prime is 655488181. The next prime is 655488199. The reversal of 655488189 is 981884556.

It is a happy number.

655488189 is a `hidden beast` number, since 6 + 554 + 8 + 8 + 1 + 89 = 666.

It is not a de Polignac number, because 655488189 - 2³ = 655488181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655488181) 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 47 ways as a sum of consecutive naturals, for example, 994342 + ... + 995000.

It is an arithmetic number, because the mean of its divisors is an integer number (21192600).

Almost surely, 2^655488189 is an apocalyptic number.

It is an amenable number.

655488189 is a deficient number, since it is larger than the sum of its proper divisors (361756611).

655488189 is a wasteful number, since it uses less digits than its factorization.

655488189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 831 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 655488189 is about 25602.5035689872. The cubic root of 655488189 is about 868.6702674854.

It can be divided in two parts, 65548 and 8189, that added together give a palindrome (73737).

The spelling of 655488189 in words is "six hundred fifty-five million, four hundred eighty-eight thousand, one hundred eighty-nine".