189650286 has 72 divisors (see below), whose sum is σ = 503198280. Its totient is φ = 51329376.

The previous prime is 189650261. The next prime is 189650287. The reversal of 189650286 is 682056981.

189650286 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189650287) 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 35 ways as a sum of consecutive naturals, for example, 11100 + ... + 22416.

It is an arithmetic number, because the mean of its divisors is an integer number (6988865).

Almost surely, 2^189650286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189650286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251599140).

189650286 is an abundant number, since it is smaller than the sum of its proper divisors (313547994).

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

189650286 is a wasteful number, since it uses less digits than its factorization.

189650286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358 (or 11348 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 189650286 is about 13771.3574494310. The cubic root of 189650286 is about 574.5367772723.

The spelling of 189650286 in words is "one hundred eighty-nine million, six hundred fifty thousand, two hundred eighty-six".