18418584992 has 72 divisors (see below), whose sum is σ = 38706756480. Its totient is φ = 8625576960.

The previous prime is 18418584953. The next prime is 18418585001. The reversal of 18418584992 is 29948581481.

It is a congruent number.

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, 1946609 + ... + 1956047.

It is an arithmetic number, because the mean of its divisors is an integer number (537593840).

Almost surely, 2^18418584992 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 18418584992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19353378240).

18418584992 is an abundant number, since it is smaller than the sum of its proper divisors (20288171488).

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

18418584992 is a wasteful number, since it uses less digits than its factorization.

18418584992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9694 (or 9669 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 59.

The spelling of 18418584992 in words is "eighteen billion, four hundred eighteen million, five hundred eighty-four thousand, nine hundred ninety-two".