165432136 has 8 divisors (see below), whose sum is σ = 310185270. Its totient is φ = 82716064.

The previous prime is 165432131. The next prime is 165432161. The reversal of 165432136 is 631234561.

It can be written as a sum of positive squares in only one way, i.e., 162562500 + 2869636 = 12750^2 + 1694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 165432098 and 165432107.

It is not an unprimeable number, because it can be changed into a prime (165432131) 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 as a sum of consecutive naturals, namely, 10339501 + ... + 10339516.

Almost surely, 2^165432136 is an apocalyptic number.

It is an amenable number.

165432136 is a deficient number, since it is larger than the sum of its proper divisors (144753134).

165432136 is a wasteful number, since it uses less digits than its factorization.

165432136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20679023 (or 20679019 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 165432136 is about 12862.0424505597. The cubic root of 165432136 is about 548.9590625555.

Adding to 165432136 its reverse (631234561), we get a palindrome (796666697).

The spelling of 165432136 in words is "one hundred sixty-five million, four hundred thirty-two thousand, one hundred thirty-six".