189042266 has 16 divisors (see below), whose sum is σ = 324492480. Its totient is φ = 80913120.

The previous prime is 189042263. The next prime is 189042281. The reversal of 189042266 is 662240981.

It is not an unprimeable number, because it can be changed into a prime (189042263) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2981 + ... + 19671.

It is an arithmetic number, because the mean of its divisors is an integer number (20280780).

Almost surely, 2^189042266 is an apocalyptic number.

189042266 is a deficient number, since it is larger than the sum of its proper divisors (135450214).

189042266 is a wasteful number, since it uses less digits than its factorization.

189042266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17509.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 189042266 is about 13749.2641984944. The cubic root of 189042266 is about 573.9221304524.

The spelling of 189042266 in words is "one hundred eighty-nine million, forty-two thousand, two hundred sixty-six".