19012418836 has 12 divisors (see below), whose sum is σ = 33389302912. Its totient is φ = 9472618008.

The previous prime is 19012418797. The next prime is 19012418857. The reversal of 19012418836 is 63881421091.

It is a super-2 number, since 2×19012418836² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19012418792 and 19012418801.

It is a congruent number.

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, 8396580 + ... + 8398843.

Almost surely, 2^19012418836 is an apocalyptic number.

It is an amenable number.

19012418836 is a deficient number, since it is larger than the sum of its proper divisors (14376884076).

19012418836 is a wasteful number, since it uses less digits than its factorization.

19012418836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16795710 (or 16795708 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 19012418836 in words is "nineteen billion, twelve million, four hundred eighteen thousand, eight hundred thirty-six".