188349379218 has 1152 divisors, whose sum is σ = 632438876160. Its totient is φ = 41150592000.

The previous prime is 188349379187. The next prime is 188349379223. The reversal of 188349379218 is 812973943881.

188349379218 is a `hidden beast` number, since 1 + 8 + 8 + 3 + 49 + 379 + 218 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 2652808123 + ... + 2652808193.

It is an arithmetic number, because the mean of its divisors is an integer number (548992080).

Almost surely, 2^188349379218 is an apocalyptic number.

188349379218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 188349379218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316219438080).

188349379218 is an abundant number, since it is smaller than the sum of its proper divisors (444089496942).

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

188349379218 is a wasteful number, since it uses less digits than its factorization.

188349379218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 167 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 188349379218 in words is "one hundred eighty-eight billion, three hundred forty-nine million, three hundred seventy-nine thousand, two hundred eighteen".