189133765 has 8 divisors (see below), whose sum is σ = 227594880. Its totient is φ = 150884112.

The previous prime is 189133757. The next prime is 189133783. The reversal of 189133765 is 567331981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189133765 - 2³ = 189133757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50889 + ... + 54478.

It is an arithmetic number, because the mean of its divisors is an integer number (28449360).

Almost surely, 2^189133765 is an apocalyptic number.

It is an amenable number.

189133765 is a deficient number, since it is larger than the sum of its proper divisors (38461115).

189133765 is a wasteful number, since it uses less digits than its factorization.

189133765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105731.

The product of its digits is 136080, while the sum is 43.

The square root of 189133765 is about 13752.5912103865. The cubic root of 189133765 is about 574.0147108614.

The spelling of 189133765 in words is "one hundred eighty-nine million, one hundred thirty-three thousand, seven hundred sixty-five".