19113834918 has 16 divisors (see below), whose sum is σ = 38235113280. Its totient is φ = 6370037736.

The previous prime is 19113834851. The next prime is 19113834931. The reversal of 19113834918 is 81943831191.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276480 + ... + 338627.

It is an arithmetic number, because the mean of its divisors is an integer number (2389694580).

Almost surely, 2^19113834918 is an apocalyptic number.

19113834918 is an abundant number, since it is smaller than the sum of its proper divisors (19121278362).

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

19113834918 is a wasteful number, since it uses less digits than its factorization.

19113834918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620291.

The product of its digits is 186624, while the sum is 48.

The spelling of 19113834918 in words is "nineteen billion, one hundred thirteen million, eight hundred thirty-four thousand, nine hundred eighteen".