188993064 has 64 divisors (see below), whose sum is σ = 516479040. Its totient is φ = 57277440.

The previous prime is 188993027. The next prime is 188993083. The reversal of 188993064 is 460399881.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16384 + ... + 25424.

It is an arithmetic number, because the mean of its divisors is an integer number (8069985).

Almost surely, 2^188993064 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 188993064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258239520).

188993064 is an abundant number, since it is smaller than the sum of its proper divisors (327485976).

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

188993064 is a wasteful number, since it uses less digits than its factorization.

188993064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9130 (or 9126 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 188993064 is about 13747.4748226720. The cubic root of 188993064 is about 573.8723345920.

The spelling of 188993064 in words is "one hundred eighty-eight million, nine hundred ninety-three thousand, sixty-four".