168446445 has 8 divisors (see below), whose sum is σ = 269514336. Its totient is φ = 89838096.

The previous prime is 168446441. The next prime is 168446461. The reversal of 168446445 is 544644861.

It is a happy number.

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

It is not a de Polignac number, because 168446445 - 2² = 168446441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168446397 and 168446406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168446441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5614867 + ... + 5614896.

It is an arithmetic number, because the mean of its divisors is an integer number (33689292).

Almost surely, 2^168446445 is an apocalyptic number.

168446445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168446445 is a deficient number, since it is larger than the sum of its proper divisors (101067891).

168446445 is a wasteful number, since it uses less digits than its factorization.

168446445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11229771.

The product of its digits is 368640, while the sum is 42.

The square root of 168446445 is about 12978.6919602863. The cubic root of 168446445 is about 552.2731759352.

The spelling of 168446445 in words is "one hundred sixty-eight million, four hundred forty-six thousand, four hundred forty-five".