165373143 has 16 divisors (see below), whose sum is σ = 238350336. Its totient is φ = 101386080.

The previous prime is 165373099. The next prime is 165373157. The reversal of 165373143 is 341373561.

It is not a de Polignac number, because 165373143 - 2⁶ = 165373079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165373193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2746 + ... + 18392.

It is an arithmetic number, because the mean of its divisors is an integer number (14896896).

Almost surely, 2^165373143 is an apocalyptic number.

165373143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

165373143 is a deficient number, since it is larger than the sum of its proper divisors (72977193).

165373143 is a wasteful number, since it uses less digits than its factorization.

165373143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15934.

The product of its digits is 22680, while the sum is 33.

The square root of 165373143 is about 12859.7489477828. The cubic root of 165373143 is about 548.8938019740.

The spelling of 165373143 in words is "one hundred sixty-five million, three hundred seventy-three thousand, one hundred forty-three".