19063393818 has 32 divisors (see below), whose sum is σ = 43780001280. Its totient is φ = 5420867760.

The previous prime is 19063393793. The next prime is 19063393829. The reversal of 19063393818 is 81839336091.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1066708 + ... + 1084431.

It is an arithmetic number, because the mean of its divisors is an integer number (1368125040).

Almost surely, 2^19063393818 is an apocalyptic number.

19063393818 is an abundant number, since it is smaller than the sum of its proper divisors (24716607462).

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

19063393818 is a wasteful number, since it uses less digits than its factorization.

19063393818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151362.

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 19063393818 in words is "nineteen billion, sixty-three million, three hundred ninety-three thousand, eight hundred eighteen".