165389189 has 8 divisors (see below), whose sum is σ = 189634368. Its totient is φ = 141298560.

The previous prime is 165389143. The next prime is 165389207. The reversal of 165389189 is 981983561.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165389189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165389689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36332 + ... + 40629.

It is an arithmetic number, because the mean of its divisors is an integer number (23704296).

Almost surely, 2^165389189 is an apocalyptic number.

It is an amenable number.

165389189 is a deficient number, since it is larger than the sum of its proper divisors (24245179).

165389189 is an equidigital number, since it uses as much as digits as its factorization.

165389189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77275.

The product of its digits is 466560, while the sum is 50.

The square root of 165389189 is about 12860.3728173020. The cubic root of 165389189 is about 548.9115542824.

The spelling of 165389189 in words is "one hundred sixty-five million, three hundred eighty-nine thousand, one hundred eighty-nine".