19004396208 has 80 divisors (see below), whose sum is σ = 58547728896. Its totient is φ = 5193745920.

The previous prime is 19004396141. The next prime is 19004396251. The reversal of 19004396208 is 80269340091.

It is a super-2 number, since 2×19004396208² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 19004396208.

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, 1221853 + ... + 1237308.

Almost surely, 2^19004396208 is an apocalyptic number.

It is an amenable number.

19004396208 is an abundant number, since it is smaller than the sum of its proper divisors (39543332688).

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

19004396208 is a wasteful number, since it uses less digits than its factorization.

19004396208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459202 (or 2459196 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 19004396208 in words is "nineteen billion, four million, three hundred ninety-six thousand, two hundred eight".