18496617984 has 480 divisors, whose sum is σ = 62495937504. Its totient is φ = 5214044160.

The previous prime is 18496617983. The next prime is 18496618003. The reversal of 18496617984 is 48971669481.

18496617984 is a `hidden beast` number, since 1 + 8 + 4 + 9 + 6 + 617 + 9 + 8 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18496617983) 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, 41752867 + ... + 41753309.

Almost surely, 2^18496617984 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 18496617984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31247968752).

18496617984 is an abundant number, since it is smaller than the sum of its proper divisors (43999319520).

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

18496617984 is a wasteful number, since it uses less digits than its factorization.

18496617984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 519 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 18496617984 in words is "eighteen billion, four hundred ninety-six million, six hundred seventeen thousand, nine hundred eighty-four".