168188401 has 2 divisors, whose sum is σ = 168188402. Its totient is φ = 168188400.

The previous prime is 168188389. The next prime is 168188413. The reversal of 168188401 is 104881861.

It is a balanced prime because it is at equal distance from previous prime (168188389) and next prime (168188413).

It can be written as a sum of positive squares in only one way, i.e., 134560000 + 33628401 = 11600^2 + 5799^2 .

It is a cyclic number.

It is not a de Polignac number, because 168188401 - 2¹¹ = 168186353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168188441) 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, 84094200 + 84094201.

It is an arithmetic number, because the mean of its divisors is an integer number (84094201).

Almost surely, 2^168188401 is an apocalyptic number.

It is an amenable number.

168188401 is a deficient number, since it is larger than the sum of its proper divisors (1).

168188401 is an equidigital number, since it uses as much as digits as its factorization.

168188401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 37.

The square root of 168188401 is about 12968.7470867467. The cubic root of 168188401 is about 551.9910217419.

The spelling of 168188401 in words is "one hundred sixty-eight million, one hundred eighty-eight thousand, four hundred one".