18684066104 has 64 divisors (see below), whose sum is σ = 40494816000. Its totient is φ = 7987392000.

The previous prime is 18684066101. The next prime is 18684066127. The reversal of 18684066104 is 40166048681.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18684066101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2538029 + ... + 2545379.

It is an arithmetic number, because the mean of its divisors is an integer number (632731500).

Almost surely, 2^18684066104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18684066104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20247408000).

18684066104 is an abundant number, since it is smaller than the sum of its proper divisors (21810749896).

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

18684066104 is a wasteful number, since it uses less digits than its factorization.

18684066104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9084 (or 9080 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 18684066104 in words is "eighteen billion, six hundred eighty-four million, sixty-six thousand, one hundred four".