188816 has 10 divisors (see below), whose sum is σ = 365862. Its totient is φ = 94400.

The previous prime is 188801. The next prime is 188827. The reversal of 188816 is 618881.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 163216 + 25600 = 404^2 + 160^2 .

It is an unprimeable number.

188816 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5885 + ... + 5916.

2¹⁸⁸⁸¹⁶ is an apocalyptic number.

188816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

188816 is a deficient number, since it is larger than the sum of its proper divisors (177046).

188816 is a wasteful number, since it uses less digits than its factorization.

188816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11809 (or 11803 counting only the distinct ones).

The product of its digits is 3072, while the sum is 32.

The square root of 188816 is about 434.5296307503. The cubic root of 188816 is about 57.3693061910.

The spelling of 188816 in words is "one hundred eighty-eight thousand, eight hundred sixteen".