19441668 has 24 divisors (see below), whose sum is σ = 45724672. Its totient is φ = 6429024.

The previous prime is 19441661. The next prime is 19441673. The reversal of 19441668 is 86614491.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19441661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4855 + ... + 7902.

Almost surely, 2^19441668 is an apocalyptic number.

It is an amenable number.

19441668 is an abundant number, since it is smaller than the sum of its proper divisors (26283004).

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

19441668 is a wasteful number, since it uses less digits than its factorization.

19441668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891 (or 12889 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 19441668 is about 4409.2706879937. The cubic root of 19441668 is about 268.8919748853.

The spelling of 19441668 in words is "nineteen million, four hundred forty-one thousand, six hundred sixty-eight".