165339143 has 4 divisors (see below), whose sum is σ = 165391320. Its totient is φ = 165286968.

The previous prime is 165339137. The next prime is 165339149. The reversal of 165339143 is 341933561.

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

It is an interprime number because it is at equal distance from previous prime (165339137) and next prime (165339149).

It is a cyclic number.

It is not a de Polignac number, because 165339143 - 2⁶ = 165339079 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 (165339149) 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 in 3 ways as a sum of consecutive naturals, for example, 21005 + ... + 27782.

It is an arithmetic number, because the mean of its divisors is an integer number (41347830).

Almost surely, 2^165339143 is an apocalyptic number.

165339143 is a deficient number, since it is larger than the sum of its proper divisors (52177).

165339143 is an equidigital number, since it uses as much as digits as its factorization.

165339143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52176.

The product of its digits is 29160, while the sum is 35.

The square root of 165339143 is about 12858.4269255613. The cubic root of 165339143 is about 548.8561826685.

The spelling of 165339143 in words is "one hundred sixty-five million, three hundred thirty-nine thousand, one hundred forty-three".