18670336686 has 12 divisors (see below), whose sum is σ = 40452396192. Its totient is φ = 6223445556.

The previous prime is 18670336679. The next prime is 18670336697. The reversal of 18670336686 is 68663307681.

18670336686 is a `hidden beast` number, since 186 + 70 + 336 + 68 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 518620446 + ... + 518620481.

It is an arithmetic number, because the mean of its divisors is an integer number (3371033016).

Almost surely, 2^18670336686 is an apocalyptic number.

18670336686 is an abundant number, since it is smaller than the sum of its proper divisors (21782059506).

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

18670336686 is a wasteful number, since it uses less digits than its factorization.

18670336686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037240935 (or 1037240932 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 18670336686 in words is "eighteen billion, six hundred seventy million, three hundred thirty-six thousand, six hundred eighty-six".