168663842 has 8 divisors (see below), whose sum is σ = 253388736. Its totient is φ = 84200932.

The previous prime is 168663823. The next prime is 168663881. The reversal of 168663842 is 248366861.

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 = 168663793 and 168663802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63878 + ... + 66465.

It is an arithmetic number, because the mean of its divisors is an integer number (31673592).

Almost surely, 2^168663842 is an apocalyptic number.

168663842 is a deficient number, since it is larger than the sum of its proper divisors (84724894).

168663842 is a wasteful number, since it uses less digits than its factorization.

168663842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130992.

The product of its digits is 331776, while the sum is 44.

The square root of 168663842 is about 12987.0644104047. The cubic root of 168663842 is about 552.5106617381.

The spelling of 168663842 in words is "one hundred sixty-eight million, six hundred sixty-three thousand, eight hundred forty-two".