165235189 has 16 divisors (see below), whose sum is σ = 201312000. Its totient is φ = 132390144.

The previous prime is 165235181. The next prime is 165235249. The reversal of 165235189 is 981532561.

It is a cyclic number.

It is not a de Polignac number, because 165235189 - 2³ = 165235181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165235181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13072 + ... + 22390.

It is an arithmetic number, because the mean of its divisors is an integer number (12582000).

Almost surely, 2^165235189 is an apocalyptic number.

It is an amenable number.

165235189 is a deficient number, since it is larger than the sum of its proper divisors (36076811).

165235189 is a wasteful number, since it uses less digits than its factorization.

165235189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9492.

The product of its digits is 64800, while the sum is 40.

The square root of 165235189 is about 12854.3840381405. The cubic root of 165235189 is about 548.7411307488.

It can be divided in two parts, 16523 and 5189, that added together give a palindrome (21712).

The spelling of 165235189 in words is "one hundred sixty-five million, two hundred thirty-five thousand, one hundred eighty-nine".