18884572068 has 12 divisors (see below), whose sum is σ = 44064001520. Its totient is φ = 6294857352.

The previous prime is 18884572051. The next prime is 18884572081. The reversal of 18884572068 is 86027548881.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 18884571999 and 18884572017.

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, 786857158 + ... + 786857181.

Almost surely, 2^18884572068 is an apocalyptic number.

It is an amenable number.

18884572068 is an abundant number, since it is smaller than the sum of its proper divisors (25179429452).

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

18884572068 is a wasteful number, since it uses less digits than its factorization.

18884572068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573714346 (or 1573714344 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 57.

The spelling of 18884572068 in words is "eighteen billion, eight hundred eighty-four million, five hundred seventy-two thousand, sixty-eight".