168481218 has 32 divisors (see below), whose sum is σ = 356332032. Its totient is φ = 53020800.

The previous prime is 168481217. The next prime is 168481241. The reversal of 168481218 is 812184861.

It is not an unprimeable number, because it can be changed into a prime (168481217) 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 15 ways as a sum of consecutive naturals, for example, 3421 + ... + 18672.

It is an arithmetic number, because the mean of its divisors is an integer number (11135376).

Almost surely, 2^168481218 is an apocalyptic number.

168481218 is an abundant number, since it is smaller than the sum of its proper divisors (187850814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168481218 is a wasteful number, since it uses less digits than its factorization.

168481218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22170.

The product of its digits is 24576, while the sum is 39.

The square root of 168481218 is about 12980.0315099772. The cubic root of 168481218 is about 552.3111758938.

The spelling of 168481218 in words is "one hundred sixty-eight million, four hundred eighty-one thousand, two hundred eighteen".