18708481168 has 60 divisors (see below), whose sum is σ = 39378426048. Its totient is φ = 8606532480.

The previous prime is 18708481109. The next prime is 18708481201. The reversal of 18708481168 is 86118480781.

It is a super-2 number, since 2×18708481168² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 829821 + ... + 852067.

Almost surely, 2^18708481168 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 18708481168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19689213024).

18708481168 is an abundant number, since it is smaller than the sum of its proper divisors (20669944880).

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

18708481168 is a wasteful number, since it uses less digits than its factorization.

18708481168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22592 (or 22573 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 52.

The spelling of 18708481168 in words is "eighteen billion, seven hundred eight million, four hundred eighty-one thousand, one hundred sixty-eight".