165450338 has 4 divisors (see below), whose sum is σ = 248175510. Its totient is φ = 82725168.

The previous prime is 165450331. The next prime is 165450343. The reversal of 165450338 is 833054561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 151708489 + 13741849 = 12317^2 + 3707^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165450298 and 165450307.

It is not an unprimeable number, because it can be changed into a prime (165450331) 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, 41362583 + ... + 41362586.

Almost surely, 2^165450338 is an apocalyptic number.

165450338 is a deficient number, since it is larger than the sum of its proper divisors (82725172).

165450338 is an equidigital number, since it uses as much as digits as its factorization.

165450338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82725171.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 165450338 is about 12862.7500170065. The cubic root of 165450338 is about 548.9791952550.

The spelling of 165450338 in words is "one hundred sixty-five million, four hundred fifty thousand, three hundred thirty-eight".