19385144 has 16 divisors (see below), whose sum is σ = 36412200. Its totient is φ = 9675232.

The previous prime is 19385143. The next prime is 19385161. The reversal of 19385144 is 44158391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19385141) 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 3 ways as a sum of consecutive naturals, for example, 3434 + ... + 7110.

Almost surely, 2^19385144 is an apocalyptic number.

It is an amenable number.

19385144 is a deficient number, since it is larger than the sum of its proper divisors (17027056).

19385144 is a wasteful number, since it uses less digits than its factorization.

19385144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342 (or 4338 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 19385144 is about 4402.8563456011. The cubic root of 19385144 is about 268.6311330112.

The spelling of 19385144 in words is "nineteen million, three hundred eighty-five thousand, one hundred forty-four".