168338143 has 4 divisors (see below), whose sum is σ = 168471040. Its totient is φ = 168205248.

The previous prime is 168338141. The next prime is 168338179. The reversal of 168338143 is 341833861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341833861 = 37 ⋅9238753.

It is a cyclic number.

It is not a de Polignac number, because 168338143 - 2¹ = 168338141 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 (168338141) 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, 64530 + ... + 67087.

It is an arithmetic number, because the mean of its divisors is an integer number (42117760).

Almost surely, 2^168338143 is an apocalyptic number.

168338143 is a deficient number, since it is larger than the sum of its proper divisors (132897).

168338143 is a wasteful number, since it uses less digits than its factorization.

168338143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132896.

The product of its digits is 41472, while the sum is 37.

The square root of 168338143 is about 12974.5189891572. The cubic root of 168338143 is about 552.1547899149.

It can be divided in two parts, 16833 and 8143, that added together give a triangular number (24976 = T₂₂₃).

The spelling of 168338143 in words is "one hundred sixty-eight million, three hundred thirty-eight thousand, one hundred forty-three".