168909227 has 2 divisors, whose sum is σ = 168909228. Its totient is φ = 168909226.

The previous prime is 168909199. The next prime is 168909281. The reversal of 168909227 is 722909861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168909227 - 2⁶ = 168909163 is a prime.

It is not a weakly prime, because it can be changed into another prime (168909287) 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, 84454613 + 84454614.

It is an arithmetic number, because the mean of its divisors is an integer number (84454614).

Almost surely, 2^168909227 is an apocalyptic number.

168909227 is a deficient number, since it is larger than the sum of its proper divisors (1).

168909227 is an equidigital number, since it uses as much as digits as its factorization.

168909227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 168909227 is about 12996.5082618371. The cubic root of 168909227 is about 552.7784767611.

The spelling of 168909227 in words is "one hundred sixty-eight million, nine hundred nine thousand, two hundred twenty-seven".