18718746876 has 72 divisors (see below), whose sum is σ = 49871137680. Its totient is φ = 5903594496.

The previous prime is 18718746863. The next prime is 18718746941. The reversal of 18718746876 is 67864781781.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 527980 + ... + 562316.

It is an arithmetic number, because the mean of its divisors is an integer number (692654690).

Almost surely, 2^18718746876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18718746876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24935568840).

18718746876 is an abundant number, since it is smaller than the sum of its proper divisors (31152390804).

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

18718746876 is a wasteful number, since it uses less digits than its factorization.

18718746876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35163 (or 35158 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 63.

The spelling of 18718746876 in words is "eighteen billion, seven hundred eighteen million, seven hundred forty-six thousand, eight hundred seventy-six".