168041994 has 16 divisors (see below), whose sum is σ = 336286080. Its totient is φ = 55980320.

The previous prime is 168041989. The next prime is 168041999. The reversal of 168041994 is 499140861.

168041994 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (168041989) and next prime (168041999).

It is a super-2 number, since 2×168041994² = 56476223494992072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168041999) 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, 3742 + ... + 18710.

It is an arithmetic number, because the mean of its divisors is an integer number (21017880).

Almost surely, 2^168041994 is an apocalyptic number.

168041994 is an abundant number, since it is smaller than the sum of its proper divisors (168244086).

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

168041994 is a wasteful number, since it uses less digits than its factorization.

168041994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16845.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 168041994 is about 12963.1012493153. The cubic root of 168041994 is about 551.8308069468.

The spelling of 168041994 in words is "one hundred sixty-eight million, forty-one thousand, nine hundred ninety-four".