168143013 has 16 divisors (see below), whose sum is σ = 249696000. Its totient is φ = 111827520.

The previous prime is 168142991. The next prime is 168143057. The reversal of 168143013 is 310341861.

It is not a de Polignac number, because 168143013 - 2¹² = 168138917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168143093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4413 + ... + 18861.

It is an arithmetic number, because the mean of its divisors is an integer number (15606000).

Almost surely, 2^168143013 is an apocalyptic number.

It is an amenable number.

168143013 is a deficient number, since it is larger than the sum of its proper divisors (81552987).

168143013 is a wasteful number, since it uses less digits than its factorization.

168143013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14889 (or 14883 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 168143013 is about 12966.9970694837. The cubic root of 168143013 is about 551.9413631004.

Adding to 168143013 its reverse (310341861), we get a palindrome (478484874).

The spelling of 168143013 in words is "one hundred sixty-eight million, one hundred forty-three thousand, thirteen".