168234218 has 8 divisors (see below), whose sum is σ = 256488420. Its totient is φ = 82738080.

The previous prime is 168234217. The next prime is 168234223. The reversal of 168234218 is 812432861.

It can be written as a sum of positive squares in 2 ways, for example, as 166848889 + 1385329 = 12917^2 + 1177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (168234211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689363 + ... + 689606.

Almost surely, 2^168234218 is an apocalyptic number.

168234218 is a deficient number, since it is larger than the sum of its proper divisors (88254202).

168234218 is a wasteful number, since it uses less digits than its factorization.

168234218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379032.

The product of its digits is 18432, while the sum is 35.

The square root of 168234218 is about 12970.5134054131. The cubic root of 168234218 is about 552.0411406885.

The spelling of 168234218 in words is "one hundred sixty-eight million, two hundred thirty-four thousand, two hundred eighteen".