18672350208 has 176 divisors, whose sum is σ = 51360376320. Its totient is φ = 6028288000.

The previous prime is 18672350183. The next prime is 18672350227. The reversal of 18672350208 is 80205327681.

It is a self number, because there is not a number n which added to its sum of digits gives 18672350208.

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, 12867883 + ... + 12869333.

It is an arithmetic number, because the mean of its divisors is an integer number (291820320).

Almost surely, 2^18672350208 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 18672350208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25680188160).

18672350208 is an abundant number, since it is smaller than the sum of its proper divisors (32688026112).

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

18672350208 is a wasteful number, since it uses less digits than its factorization.

18672350208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

Adding to 18672350208 its reverse (80205327681), we get a palindrome (98877677889).

The spelling of 18672350208 in words is "eighteen billion, six hundred seventy-two million, three hundred fifty thousand, two hundred eight".