19380503818 has 32 divisors (see below), whose sum is σ = 31752000000. Its totient is φ = 8818159296.

The previous prime is 19380503803. The next prime is 19380503881. The reversal of 19380503818 is 81830508391.

19380503818 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 1024308 + ... + 1043056.

It is an arithmetic number, because the mean of its divisors is an integer number (992250000).

Almost surely, 2^19380503818 is an apocalyptic number.

19380503818 is a deficient number, since it is larger than the sum of its proper divisors (12371496182).

19380503818 is a wasteful number, since it uses less digits than its factorization.

19380503818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19326.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 19380503818 in words is "nineteen billion, three hundred eighty million, five hundred three thousand, eight hundred eighteen".