168234385 has 32 divisors (see below), whose sum is σ = 226934784. Its totient is φ = 118680000.

The previous prime is 168234383. The next prime is 168234389. The reversal of 168234385 is 583432861.

It is not a de Polignac number, because 168234385 - 2¹ = 168234383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168234383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390120 + ... + 390550.

It is an arithmetic number, because the mean of its divisors is an integer number (7091712).

Almost surely, 2^168234385 is an apocalyptic number.

It is an amenable number.

168234385 is a deficient number, since it is larger than the sum of its proper divisors (58700399).

168234385 is a wasteful number, since it uses less digits than its factorization.

168234385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its digits is 138240, while the sum is 40.

The square root of 168234385 is about 12970.5198430903. The cubic root of 168234385 is about 552.0413233522.

The spelling of 168234385 in words is "one hundred sixty-eight million, two hundred thirty-four thousand, three hundred eighty-five".