18708187680 has 960 divisors, whose sum is σ = 84216464640. Its totient is φ = 3804143616.

The previous prime is 18708187643. The next prime is 18708187691. The reversal of 18708187680 is 8678180781.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 34201167 + ... + 34201713.

It is an arithmetic number, because the mean of its divisors is an integer number (87725484).

Almost surely, 2^18708187680 is an apocalyptic number.

18708187680 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 18708187680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42108232320).

18708187680 is an abundant number, since it is smaller than the sum of its proper divisors (65508276960).

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

18708187680 is a wasteful number, since it uses less digits than its factorization.

18708187680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 54.

The spelling of 18708187680 in words is "eighteen billion, seven hundred eight million, one hundred eighty-seven thousand, six hundred eighty".