168418244 has 12 divisors (see below), whose sum is σ = 295031100. Its totient is φ = 84123648.

The previous prime is 168418183. The next prime is 168418247. The reversal of 168418244 is 442814861.

It can be written as a sum of positive squares in 2 ways, for example, as 26522500 + 141895744 = 5150^2 + 11912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 168418198 and 168418207.

It is not an unprimeable number, because it can be changed into a prime (168418247) 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 in 3 ways as a sum of consecutive naturals, for example, 16829 + ... + 24900.

It is an arithmetic number, because the mean of its divisors is an integer number (24585925).

Almost surely, 2^168418244 is an apocalyptic number.

It is an amenable number.

168418244 is a deficient number, since it is larger than the sum of its proper divisors (126612856).

168418244 is a wasteful number, since it uses less digits than its factorization.

168418244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42742 (or 42740 counting only the distinct ones).

The product of its digits is 49152, while the sum is 38.

The square root of 168418244 is about 12977.6054802109. The cubic root of 168418244 is about 552.2423540221.

The spelling of 168418244 in words is "one hundred sixty-eight million, four hundred eighteen thousand, two hundred forty-four".