19397168 has 20 divisors (see below), whose sum is σ = 42951120. Its totient is φ = 8313024.

The previous prime is 19397123. The next prime is 19397173. The reversal of 19397168 is 86179391.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 86483 + ... + 86706.

It is an arithmetic number, because the mean of its divisors is an integer number (2147556).

Almost surely, 2^19397168 is an apocalyptic number.

It is an amenable number.

19397168 is an abundant number, since it is smaller than the sum of its proper divisors (23553952).

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

19397168 is a wasteful number, since it uses less digits than its factorization.

19397168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173204 (or 173198 counting only the distinct ones).

The product of its digits is 81648, while the sum is 44.

The square root of 19397168 is about 4404.2216111363. The cubic root of 19397168 is about 268.6866627018.

The spelling of 19397168 in words is "nineteen million, three hundred ninety-seven thousand, one hundred sixty-eight".