18927019434 has 16 divisors (see below), whose sum is σ = 39075137280. Its totient is φ = 6105490080.

The previous prime is 18927019417. The next prime is 18927019439. The reversal of 18927019434 is 43491072981.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18927019439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50878899 + ... + 50879270.

It is an arithmetic number, because the mean of its divisors is an integer number (2442196080).

Almost surely, 2^18927019434 is an apocalyptic number.

18927019434 is an abundant number, since it is smaller than the sum of its proper divisors (20148117846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18927019434 is a wasteful number, since it uses less digits than its factorization.

18927019434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101758205.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 18927019434 in words is "eighteen billion, nine hundred twenty-seven million, nineteen thousand, four hundred thirty-four".