19424903 has 6 divisors (see below), whose sum is σ = 20291544. Its totient is φ = 18560124.

The previous prime is 19424869. The next prime is 19424953. The reversal of 19424903 is 30942491.

It is a happy number.

It is not a de Polignac number, because 19424903 - 2¹⁶ = 19359367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19424903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19424953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20678 + ... + 21596.

It is an arithmetic number, because the mean of its divisors is an integer number (3381924).

Almost surely, 2^19424903 is an apocalyptic number.

19424903 is a deficient number, since it is larger than the sum of its proper divisors (866641).

19424903 is an frugal number, since it uses more digits than its factorization.

19424903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 19424903 is about 4407.3691699244. The cubic root of 19424903 is about 268.8146620684.

The spelling of 19424903 in words is "nineteen million, four hundred twenty-four thousand, nine hundred three".