189135766 has 16 divisors (see below), whose sum is σ = 300994560. Its totient is φ = 88882920.

The previous prime is 189135763. The next prime is 189135811. The reversal of 189135766 is 667531981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189135763) 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 7 ways as a sum of consecutive naturals, for example, 14770 + ... + 24421.

It is an arithmetic number, because the mean of its divisors is an integer number (18812160).

Almost surely, 2^189135766 is an apocalyptic number.

189135766 is a deficient number, since it is larger than the sum of its proper divisors (111858794).

189135766 is a wasteful number, since it uses less digits than its factorization.

189135766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39339.

The product of its digits is 272160, while the sum is 46.

The square root of 189135766 is about 13752.6639601206. The cubic root of 189135766 is about 574.0167351772.

The spelling of 189135766 in words is "one hundred eighty-nine million, one hundred thirty-five thousand, seven hundred sixty-six".