18418846860 has 144 divisors (see below), whose sum is σ = 59395164192. Its totient is φ = 4604160000.

The previous prime is 18418846841. The next prime is 18418846861. The reversal of 18418846860 is 6864881481.

It is a happy number.

18418846860 is a `hidden beast` number, since 1 + 8 + 41 + 88 + 468 + 60 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18418846797 and 18418846806.

It is not an unprimeable number, because it can be changed into a prime (18418846861) 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, 756070 + ... + 780050.

It is an arithmetic number, because the mean of its divisors is an integer number (412466418).

Almost surely, 2^18418846860 is an apocalyptic number.

18418846860 is a gapful number since it is divisible by the number (10) 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 18418846860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29697582096).

18418846860 is an abundant number, since it is smaller than the sum of its proper divisors (40976317332).

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

18418846860 is a wasteful number, since it uses less digits than its factorization.

18418846860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24264 (or 24259 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 54.

The spelling of 18418846860 in words is "eighteen billion, four hundred eighteen million, eight hundred forty-six thousand, eight hundred sixty".