189226566 has 48 divisors (see below), whose sum is σ = 442596960. Its totient is φ = 58248960.

The previous prime is 189226561. The next prime is 189226579. The reversal of 189226566 is 665622981.

189226566 is a `hidden beast` number, since 1 + 89 + 2 + 2 + 6 + 566 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189226561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4126 + ... + 19886.

It is an arithmetic number, because the mean of its divisors is an integer number (9220770).

Almost surely, 2^189226566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189226566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221298480).

189226566 is an abundant number, since it is smaller than the sum of its proper divisors (253370394).

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

189226566 is a wasteful number, since it uses less digits than its factorization.

189226566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15821 (or 15818 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 189226566 is about 13755.9647426126. The cubic root of 189226566 is about 574.1085781642.

The spelling of 189226566 in words is "one hundred eighty-nine million, two hundred twenty-six thousand, five hundred sixty-six".