19034902878 has 16 divisors (see below), whose sum is σ = 38131514640. Its totient is φ = 6334682816.

The previous prime is 19034902849. The next prime is 19034902891. The reversal of 19034902878 is 87820943091.

It is a self number, because there is not a number n which added to its sum of digits gives 19034902878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2567193 + ... + 2574596.

It is an arithmetic number, because the mean of its divisors is an integer number (2383219665).

Almost surely, 2^19034902878 is an apocalyptic number.

19034902878 is an abundant number, since it is smaller than the sum of its proper divisors (19096611762).

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

19034902878 is a wasteful number, since it uses less digits than its factorization.

19034902878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142411.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 19034902878 in words is "nineteen billion, thirty-four million, nine hundred two thousand, eight hundred seventy-eight".