168041638 has 16 divisors (see below), whose sum is σ = 265734144. Its totient is φ = 79579080.

The previous prime is 168041623. The next prime is 168041639. The reversal of 168041638 is 836140861.

It is a junction number, because it is equal to n+sod(n) for n = 168041597 and 168041606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168041639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25920 + ... + 31747.

It is an arithmetic number, because the mean of its divisors is an integer number (16608384).

Almost surely, 2^168041638 is an apocalyptic number.

168041638 is a deficient number, since it is larger than the sum of its proper divisors (97692506).

168041638 is a wasteful number, since it uses less digits than its factorization.

168041638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57747.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 168041638 is about 12963.0875180259. The cubic root of 168041638 is about 551.8304172586.

The spelling of 168041638 in words is "one hundred sixty-eight million, forty-one thousand, six hundred thirty-eight".