19243389 has 16 divisors (see below), whose sum is σ = 28111680. Its totient is φ = 11612160.

The previous prime is 19243379. The next prime is 19243397. The reversal of 19243389 is 98334291.

It is not a de Polignac number, because 19243389 - 2⁷ = 19243261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19243349) 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 15 ways as a sum of consecutive naturals, for example, 7347 + ... + 9615.

It is an arithmetic number, because the mean of its divisors is an integer number (1756980).

Almost surely, 2^19243389 is an apocalyptic number.

It is an amenable number.

19243389 is a deficient number, since it is larger than the sum of its proper divisors (8868291).

19243389 is a wasteful number, since it uses less digits than its factorization.

19243389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its digits is 46656, while the sum is 39.

The square root of 19243389 is about 4386.7287356298. The cubic root of 19243389 is about 267.9747367959.

The spelling of 19243389 in words is "nineteen million, two hundred forty-three thousand, three hundred eighty-nine".