18858418308 has 144 divisors (see below), whose sum is σ = 53621568000. Its totient is φ = 5553183744.

The previous prime is 18858418301. The next prime is 18858418309. The reversal of 18858418308 is 80381485881.

18858418308 is a `hidden beast` number, since 18 + 8 + 584 + 18 + 30 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (18858418301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1260013 + ... + 1274891.

It is an arithmetic number, because the mean of its divisors is an integer number (372372000).

Almost surely, 2^18858418308 is an apocalyptic number.

18858418308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18858418308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26810784000).

18858418308 is an abundant number, since it is smaller than the sum of its proper divisors (34763149692).

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

18858418308 is a wasteful number, since it uses less digits than its factorization.

18858418308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15034 (or 15029 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 54.

The spelling of 18858418308 in words is "eighteen billion, eight hundred fifty-eight million, four hundred eighteen thousand, three hundred eight".