168018422 has 24 divisors (see below), whose sum is σ = 298337088. Its totient is φ = 70495920.

The previous prime is 168018407. The next prime is 168018437. The reversal of 168018422 is 224810861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (168018407) and next prime (168018437).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 23558 + ... + 29849.

It is an arithmetic number, because the mean of its divisors is an integer number (12430712).

Almost surely, 2^168018422 is an apocalyptic number.

168018422 is a deficient number, since it is larger than the sum of its proper divisors (130318666).

168018422 is a wasteful number, since it uses less digits than its factorization.

168018422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53444 (or 53433 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 168018422 is about 12962.1920214137. The cubic root of 168018422 is about 551.8050031507.

It can be divided in two parts, 1680 and 18422, that added together give a palindrome (20102).

The spelling of 168018422 in words is "one hundred sixty-eight million, eighteen thousand, four hundred twenty-two".