189002169813636 has 243 divisors, whose sum is σ = 501202034473413. Its totient is φ = 62360048016000.

The previous prime is 189002169813629. The next prime is 189002169813707. The reversal of 189002169813636 is 636318961200981.

The square root of 189002169813636 is 13747806.

It is a perfect power (a square), and thus also a powerful number.

189002169813636 is a `hidden beast` number, since 189 + 0 + 0 + 2 + 1 + 6 + 98 + 1 + 363 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3330369504900 + 185671800308736 = 1824930^2 + 13626144^2 .

It is a tau number, because it is divible by the number of its divisors (243).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 251667336261 + ... + 251667337011.

Almost surely, 2^{189002169813636} is an apocalyptic number.

189002169813636 is the 13747806-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189002169813636

189002169813636 is an abundant number, since it is smaller than the sum of its proper divisors (312199864659777).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189002169813636 is an frugal number, since it uses more digits than its factorization.

189002169813636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 189002169813636 in words is "one hundred eighty-nine trillion, two billion, one hundred sixty-nine million, eight hundred thirteen thousand, six hundred thirty-six".