188023 has 4 divisors (see below), whose sum is σ = 205128. Its totient is φ = 170920.

The previous prime is 188021. The next prime is 188029. The reversal of 188023 is 320881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 188023 - 2¹ = 188021 is a prime.

It is a super-3 number, since 3×188023³ = 19941333103104501, which contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 187985 and 188003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188021) 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 3 ways as a sum of consecutive naturals, for example, 8536 + ... + 8557.

It is an arithmetic number, because the mean of its divisors is an integer number (51282).

2¹⁸⁸⁰²³ is an apocalyptic number.

188023 is a deficient number, since it is larger than the sum of its proper divisors (17105).

188023 is a wasteful number, since it uses less digits than its factorization.

188023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17104.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 188023 is about 433.6161897347. The cubic root of 188023 is about 57.2888792179.

The spelling of 188023 in words is "one hundred eighty-eight thousand, twenty-three".