18346700736 has 504 divisors, whose sum is σ = 68046136704. Its totient is φ = 4679700480.

The previous prime is 18346700717. The next prime is 18346700753. The reversal of 18346700736 is 63700764381.

18346700736 is a `hidden beast` number, since 183 + 467 + 0 + 0 + 7 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a junction number, because it is equal to n+sod(n) for n = 18346700691 and 18346700700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11373466 + ... + 11375078.

It is an arithmetic number, because the mean of its divisors is an integer number (135012176).

Almost surely, 2^18346700736 is an apocalyptic number.

18346700736 is a gapful number since it is divisible by the number (16) 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 18346700736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34023068352).

18346700736 is an abundant number, since it is smaller than the sum of its proper divisors (49699435968).

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

18346700736 is a wasteful number, since it uses less digits than its factorization.

18346700736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 18346700736 in words is "eighteen billion, three hundred forty-six million, seven hundred thousand, seven hundred thirty-six".