18030181686 has 24 divisors (see below), whose sum is σ = 39636599352. Its totient is φ = 5463691200.

The previous prime is 18030181681. The next prime is 18030181703. The reversal of 18030181686 is 68618103081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18030181681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12416755 + ... + 12418206.

It is an arithmetic number, because the mean of its divisors is an integer number (1651524973).

Almost surely, 2^18030181686 is an apocalyptic number.

18030181686 is an abundant number, since it is smaller than the sum of its proper divisors (21606417666).

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

18030181686 is a wasteful number, since it uses less digits than its factorization.

18030181686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24834988 (or 24834977 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 18030181686 in words is "eighteen billion, thirty million, one hundred eighty-one thousand, six hundred eighty-six".