18678670336 has 88 divisors (see below), whose sum is σ = 38469844160. Its totient is φ = 9058148352.

The previous prime is 18678670331. The next prime is 18678670337. The reversal of 18678670336 is 63307687681.

It is not an unprimeable number, because it can be changed into a prime (18678670331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16632271 + ... + 16633393.

It is an arithmetic number, because the mean of its divisors is an integer number (437157320).

Almost surely, 2^18678670336 is an apocalyptic number.

18678670336 is a gapful number since it is divisible by the number (16) 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 18678670336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19234922080).

18678670336 is an abundant number, since it is smaller than the sum of its proper divisors (19791173824).

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

18678670336 is a wasteful number, since it uses less digits than its factorization.

18678670336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 18678670336 in words is "eighteen billion, six hundred seventy-eight million, six hundred seventy thousand, three hundred thirty-six".