18499487016608 has 192 divisors, whose sum is σ = 42814432362240. Its totient is φ = 7789029507072.

The previous prime is 18499487016587. The next prime is 18499487016623. The reversal of 18499487016608 is 80661078499481.

It is a Cunningham number, because it is equal to 4301103²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68683223 + ... + 68952041.

It is an arithmetic number, because the mean of its divisors is an integer number (222991835220).

Almost surely, 2^{18499487016608} 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 18499487016608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21407216181120).

18499487016608 is an abundant number, since it is smaller than the sum of its proper divisors (24314945345632).

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

18499487016608 is a wasteful number, since it uses less digits than its factorization.

18499487016608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269159 (or 269151 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 71.

The spelling of 18499487016608 in words is "eighteen trillion, four hundred ninety-nine billion, four hundred eighty-seven million, sixteen thousand, six hundred eight".