165445430 has 16 divisors (see below), whose sum is σ = 298221264. Its totient is φ = 66084960.

The previous prime is 165445421. The next prime is 165445451. The reversal of 165445430 is 34544561.

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, 3956 + ... + 18615.

It is an arithmetic number, because the mean of its divisors is an integer number (18638829).

Almost surely, 2^165445430 is an apocalyptic number.

165445430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165445430 is a deficient number, since it is larger than the sum of its proper divisors (132775834).

165445430 is a wasteful number, since it uses less digits than its factorization.

165445430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23311.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 165445430 is about 12862.5592321280. The cubic root of 165445430 is about 548.9737668052.

Adding to 165445430 its reverse (34544561), we get a palindrome (199989991).

The spelling of 165445430 in words is "one hundred sixty-five million, four hundred forty-five thousand, four hundred thirty".