18685179760 has 320 divisors, whose sum is σ = 50486768640. Its totient is φ = 6378577920.

The previous prime is 18685179727. The next prime is 18685179761. The reversal of 18685179760 is 6797158681.

It is a junction number, because it is equal to n+sod(n) for n = 18685179695 and 18685179704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18685179761) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142634895 + ... + 142635025.

It is an arithmetic number, because the mean of its divisors is an integer number (157771152).

Almost surely, 2^18685179760 is an apocalyptic number.

18685179760 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 18685179760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25243384320).

18685179760 is an abundant number, since it is smaller than the sum of its proper divisors (31801588880).

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

18685179760 is a wasteful number, since it uses less digits than its factorization.

18685179760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 18685179760 in words is "eighteen billion, six hundred eighty-five million, one hundred seventy-nine thousand, seven hundred sixty".