19819203116 has 12 divisors (see below), whose sum is σ = 34689718560. Its totient is φ = 9907854960.

The previous prime is 19819203091. The next prime is 19819203119. The reversal of 19819203116 is 61130291891.

It is not an unprimeable number, because it can be changed into a prime (19819203119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410951 + ... + 456638.

It is an arithmetic number, because the mean of its divisors is an integer number (2890809880).

Almost surely, 2^19819203116 is an apocalyptic number.

It is an amenable number.

19819203116 is a deficient number, since it is larger than the sum of its proper divisors (14870515444).

19819203116 is a wasteful number, since it uses less digits than its factorization.

19819203116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873304 (or 873302 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 19819203116 in words is "nineteen billion, eight hundred nineteen million, two hundred three thousand, one hundred sixteen".