168844072019 has 8 divisors (see below), whose sum is σ = 193286803200. Its totient is φ = 144481878216.

The previous prime is 168844071923. The next prime is 168844072043. The reversal of 168844072019 is 910270448861.

168844072019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 168844072019 - 2¹² = 168844067923 is a prime.

It is a super-2 number, since 2×168844072019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168844072069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20129849 + ... + 20138234.

It is an arithmetic number, because the mean of its divisors is an integer number (24160850400).

Almost surely, 2^168844072019 is an apocalyptic number.

168844072019 is a deficient number, since it is larger than the sum of its proper divisors (24442731181).

168844072019 is an equidigital number, since it uses as much as digits as its factorization.

168844072019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40268689.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 168844072019 in words is "one hundred sixty-eight billion, eight hundred forty-four million, seventy-two thousand, nineteen".