168384442 has 8 divisors (see below), whose sum is σ = 253031796. Its totient is φ = 84040512.

The previous prime is 168384427. The next prime is 168384443. The reversal of 168384442 is 244483861.

It is a happy number.

168384442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 164891281 + 3493161 = 12841^2 + 1869^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 168384395 and 168384404.

It is not an unprimeable number, because it can be changed into a prime (168384443) 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, 74463 + ... + 76690.

Almost surely, 2^168384442 is an apocalyptic number.

168384442 is a deficient number, since it is larger than the sum of its proper divisors (84647354).

168384442 is a wasteful number, since it uses less digits than its factorization.

168384442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151712.

The product of its digits is 147456, while the sum is 40.

The square root of 168384442 is about 12976.3030944873. The cubic root of 168384442 is about 552.2054060356.

The spelling of 168384442 in words is "one hundred sixty-eight million, three hundred eighty-four thousand, four hundred forty-two".