18660309086 has 32 divisors (see below), whose sum is σ = 29770416000. Its totient is φ = 8755471872.

The previous prime is 18660309077. The next prime is 18660309103. The reversal of 18660309086 is 68090306681.

18660309086 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 18660309086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2225510 + ... + 2233878.

It is an arithmetic number, because the mean of its divisors is an integer number (930325500).

Almost surely, 2^18660309086 is an apocalyptic number.

18660309086 is a deficient number, since it is larger than the sum of its proper divisors (11110106914).

18660309086 is a wasteful number, since it uses less digits than its factorization.

18660309086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 18660309086 in words is "eighteen billion, six hundred sixty million, three hundred nine thousand, eighty-six".