188992 has 14 divisors (see below), whose sum is σ = 375158. Its totient is φ = 94464.

The previous prime is 188983. The next prime is 188999. The reversal of 188992 is 299881.

It can be written as a sum of positive squares in only one way, i.e., 179776 + 9216 = 424^2 + 96^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188999) by changing a digit.

188992 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1413 + ... + 1540.

It is an arithmetic number, because the mean of its divisors is an integer number (26797).

2¹⁸⁸⁹⁹² is an apocalyptic number.

It is an amenable number.

188992 is a deficient number, since it is larger than the sum of its proper divisors (186166).

188992 is an equidigital number, since it uses as much as digits as its factorization.

188992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965 (or 2955 counting only the distinct ones).

The product of its digits is 10368, while the sum is 37.

The square root of 188992 is about 434.7321014142. The cubic root of 188992 is about 57.3871257654.

Subtracting 188992 from its reverse (299881), we obtain a square (110889 = 333²).

The spelling of 188992 in words is "one hundred eighty-eight thousand, nine hundred ninety-two".