19805848935 has 16 divisors (see below), whose sum is σ = 31691395680. Its totient is φ = 10562440320.

The previous prime is 19805848913. The next prime is 19805848969. The reversal of 19805848935 is 53984850891.

It is not a de Polignac number, because 19805848935 - 2⁶ = 19805848871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275445 + ... + 339825.

It is an arithmetic number, because the mean of its divisors is an integer number (1980712230).

Almost surely, 2^19805848935 is an apocalyptic number.

19805848935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19805848935 is a deficient number, since it is larger than the sum of its proper divisors (11885546745).

19805848935 is a wasteful number, since it uses less digits than its factorization.

19805848935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84898.

The product of its (nonzero) digits is 12441600, while the sum is 60.

The spelling of 19805848935 in words is "nineteen billion, eight hundred five million, eight hundred forty-eight thousand, nine hundred thirty-five".