168811445 has 16 divisors (see below), whose sum is σ = 233990208. Its totient is φ = 115549440.

The previous prime is 168811441. The next prime is 168811477. The reversal of 168811445 is 544118861.

It is not a de Polignac number, because 168811445 - 2² = 168811441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168811399 and 168811408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168811441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89339 + ... + 91208.

It is an arithmetic number, because the mean of its divisors is an integer number (14624388).

Almost surely, 2^168811445 is an apocalyptic number.

It is an amenable number.

168811445 is a deficient number, since it is larger than the sum of its proper divisors (65178763).

168811445 is a wasteful number, since it uses less digits than its factorization.

168811445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180580.

The product of its digits is 30720, while the sum is 38.

The square root of 168811445 is about 12992.7458606716. The cubic root of 168811445 is about 552.6717878617.

The spelling of 168811445 in words is "one hundred sixty-eight million, eight hundred eleven thousand, four hundred forty-five".