168143933 has 2 divisors, whose sum is σ = 168143934. Its totient is φ = 168143932.

The previous prime is 168143929. The next prime is 168143951. The reversal of 168143933 is 339341861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166848889 + 1295044 = 12917^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 168143933 - 2² = 168143929 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168143533) 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 as a sum of consecutive naturals, namely, 84071966 + 84071967.

It is an arithmetic number, because the mean of its divisors is an integer number (84071967).

Almost surely, 2^168143933 is an apocalyptic number.

It is an amenable number.

168143933 is a deficient number, since it is larger than the sum of its proper divisors (1).

168143933 is an equidigital number, since it uses as much as digits as its factorization.

168143933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 168143933 is about 12967.0325441097. The cubic root of 168143933 is about 551.9423697536.

The spelling of 168143933 in words is "one hundred sixty-eight million, one hundred forty-three thousand, nine hundred thirty-three".