19838885 has 16 divisors (see below), whose sum is σ = 26116992. Its totient is φ = 14347200.

The previous prime is 19838873. The next prime is 19838887. The reversal of 19838885 is 58883891.

It is not a de Polignac number, because 19838885 - 2¹⁶ = 19773349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19838887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9920 + ... + 11750.

It is an arithmetic number, because the mean of its divisors is an integer number (1632312).

Almost surely, 2^19838885 is an apocalyptic number.

It is an amenable number.

19838885 is a deficient number, since it is larger than the sum of its proper divisors (6278107).

19838885 is a wasteful number, since it uses less digits than its factorization.

19838885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044.

The product of its digits is 552960, while the sum is 50.

The square root of 19838885 is about 4454.0863260606. The cubic root of 19838885 is about 270.7109066130.

The spelling of 19838885 in words is "nineteen million, eight hundred thirty-eight thousand, eight hundred eighty-five".