168000181 has 2 divisors, whose sum is σ = 168000182. Its totient is φ = 168000180.

The previous prime is 168000179. The next prime is 168000193. The reversal of 168000181 is 181000861.

It is a happy number.

168000181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113742225 + 54257956 = 10665^2 + 7366^2 .It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 181000891 and 198000181.

It is a cyclic number.

It is not a de Polignac number, because 168000181 - 2¹ = 168000179 is a prime.

It is a super-2 number, since 2×168000181² = 56448121632065522, which contains 22 as substring.

Together with 168000179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168000101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84000090 + 84000091.

It is an arithmetic number, because the mean of its divisors is an integer number (84000091).

Almost surely, 2^168000181 is an apocalyptic number.

It is an amenable number.

168000181 is a deficient number, since it is larger than the sum of its proper divisors (1).

168000181 is an equidigital number, since it uses as much as digits as its factorization.

168000181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 168000181 is about 12961.4883790404. The cubic root of 168000181 is about 551.7850334370.

The spelling of 168000181 in words is "one hundred sixty-eight million, one hundred eighty-one", and thus it is an aban number.