168819144 has 32 divisors (see below), whose sum is σ = 454513920. Its totient is φ = 51944256.

The previous prime is 168819113. The next prime is 168819169. The reversal of 168819144 is 441918861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 168819096 and 168819105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270232 + ... + 270855.

It is an arithmetic number, because the mean of its divisors is an integer number (14203560).

Almost surely, 2^168819144 is an apocalyptic number.

It is an amenable number.

168819144 is an abundant number, since it is smaller than the sum of its proper divisors (285694776).

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

168819144 is a wasteful number, since it uses less digits than its factorization.

168819144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541109 (or 541105 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 168819144 is about 12993.0421380060. The cubic root of 168819144 is about 552.6801896526.

The spelling of 168819144 in words is "one hundred sixty-eight million, eight hundred nineteen thousand, one hundred forty-four".