168038646 has 16 divisors (see below), whose sum is σ = 340127424. Its totient is φ = 55337864.

The previous prime is 168038581. The next prime is 168038681. The reversal of 168038646 is 646830861.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 168038598 and 168038607.

It is a congruent number.

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, 168216 + ... + 169211.

It is an arithmetic number, because the mean of its divisors is an integer number (21257964).

Almost surely, 2^168038646 is an apocalyptic number.

168038646 is an abundant number, since it is smaller than the sum of its proper divisors (172088778).

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

168038646 is a wasteful number, since it uses less digits than its factorization.

168038646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337515.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 168038646 is about 12962.9721129068. The cubic root of 168038646 is about 551.8271421053.

The spelling of 168038646 in words is "one hundred sixty-eight million, thirty-eight thousand, six hundred forty-six".