19419112866 has 8 divisors (see below), whose sum is σ = 38838225744. Its totient is φ = 6473037620.

The previous prime is 19419112861. The next prime is 19419112873. The reversal of 19419112866 is 66821191491.

It is a sphenic number, since it is the product of 3 distinct primes.

19419112866 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (19419112861) 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, 1618259400 + ... + 1618259411.

It is an arithmetic number, because the mean of its divisors is an integer number (4854778218).

Almost surely, 2^19419112866 is an apocalyptic number.

19419112866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19419112866 is a wasteful number, since it uses less digits than its factorization.

19419112866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236518816.

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

The spelling of 19419112866 in words is "nineteen billion, four hundred nineteen million, one hundred twelve thousand, eight hundred sixty-six".