165331345 has 8 divisors (see below), whose sum is σ = 203011776. Its totient is φ = 129188976.

The previous prime is 165331333. The next prime is 165331367. The reversal of 165331345 is 543133561.

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

It is a cyclic number.

It is not a de Polignac number, because 165331345 - 2⁹ = 165330833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 384277 + ... + 384706.

It is an arithmetic number, because the mean of its divisors is an integer number (25376472).

Almost surely, 2^165331345 is an apocalyptic number.

It is an amenable number.

165331345 is a deficient number, since it is larger than the sum of its proper divisors (37680431).

165331345 is an equidigital number, since it uses as much as digits as its factorization.

165331345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769031.

The product of its digits is 16200, while the sum is 31.

The square root of 165331345 is about 12858.1236967141. The cubic root of 165331345 is about 548.8475538430.

The spelling of 165331345 in words is "one hundred sixty-five million, three hundred thirty-one thousand, three hundred forty-five".