19119867418 has 8 divisors (see below), whose sum is σ = 28963759860. Its totient is φ = 9465280800.

The previous prime is 19119867379. The next prime is 19119867433. The reversal of 19119867418 is 81476891191.

It can be written as a sum of positive squares in 2 ways, for example, as 19119422529 + 444889 = 138273^2 + 667^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47326203 + ... + 47326606.

Almost surely, 2^19119867418 is an apocalyptic number.

19119867418 is a deficient number, since it is larger than the sum of its proper divisors (9843892442).

19119867418 is a wasteful number, since it uses less digits than its factorization.

19119867418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94652912.

The product of its digits is 870912, while the sum is 55.

The spelling of 19119867418 in words is "nineteen billion, one hundred nineteen million, eight hundred sixty-seven thousand, four hundred eighteen".