18008706186 has 96 divisors (see below), whose sum is σ = 44226943488. Its totient is φ = 5467461120.

The previous prime is 18008706181. The next prime is 18008706197. The reversal of 18008706186 is 68160780081.

It is not an unprimeable number, because it can be changed into a prime (18008706181) 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, 220966 + ... + 291278.

It is an arithmetic number, because the mean of its divisors is an integer number (460697328).

Almost surely, 2^18008706186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18008706186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22113471744).

18008706186 is an abundant number, since it is smaller than the sum of its proper divisors (26218237302).

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

18008706186 is a wasteful number, since it uses less digits than its factorization.

18008706186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70378 (or 70366 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 18008706186 in words is "eighteen billion, eight million, seven hundred six thousand, one hundred eighty-six".