188011912 has 32 divisors (see below), whose sum is σ = 387144000. Its totient is φ = 84888000.

The previous prime is 188011909. The next prime is 188011919. The reversal of 188011912 is 219110881.

It is not an unprimeable number, because it can be changed into a prime (188011919) 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, 6214 + ... + 20362.

It is an arithmetic number, because the mean of its divisors is an integer number (12098250).

Almost surely, 2^188011912 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 188011912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193572000).

188011912 is an abundant number, since it is smaller than the sum of its proper divisors (199132088).

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

188011912 is a wasteful number, since it uses less digits than its factorization.

188011912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14317 (or 14313 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 31.

The square root of 188011912 is about 13711.7435798661. The cubic root of 188011912 is about 572.8775305857.

The spelling of 188011912 in words is "one hundred eighty-eight million, eleven thousand, nine hundred twelve".