168226189 has 2 divisors, whose sum is σ = 168226190. Its totient is φ = 168226188.

The previous prime is 168226153. The next prime is 168226229. The reversal of 168226189 is 981622861.

It is a happy number.

168226189 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., 138250564 + 29975625 = 11758^2 + 5475^2 .

It is a cyclic number.

It is not a de Polignac number, because 168226189 - 2¹⁷ = 168095117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168226889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84113094 + 84113095.

It is an arithmetic number, because the mean of its divisors is an integer number (84113095).

Almost surely, 2^168226189 is an apocalyptic number.

It is an amenable number.

168226189 is a deficient number, since it is larger than the sum of its proper divisors (1).

168226189 is an equidigital number, since it uses as much as digits as its factorization.

168226189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 168226189 is about 12970.2038919980. The cubic root of 168226189 is about 552.0323584703.

The spelling of 168226189 in words is "one hundred sixty-eight million, two hundred twenty-six thousand, one hundred eighty-nine".