189364266 has 96 divisors (see below), whose sum is σ = 508435200. Its totient is φ = 49600512.

The previous prime is 189364247. The next prime is 189364291. The reversal of 189364266 is 662463981.

189364266 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 315835 + ... + 316433.

It is an arithmetic number, because the mean of its divisors is an integer number (5296200).

Almost surely, 2^189364266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189364266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254217600).

189364266 is an abundant number, since it is smaller than the sum of its proper divisors (319070934).

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

189364266 is a wasteful number, since it uses less digits than its factorization.

189364266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 817 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 189364266 is about 13760.9689339087. The cubic root of 189364266 is about 574.2478038283.

The spelling of 189364266 in words is "one hundred eighty-nine million, three hundred sixty-four thousand, two hundred sixty-six".