188364 has 24 divisors (see below), whose sum is σ = 479808. Its totient is φ = 57040.

The previous prime is 188359. The next prime is 188369. The reversal of 188364 is 463881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (188359) and next prime (188369).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 188364.

It is not an unprimeable number, because it can be changed into a prime (188369) by changing a digit.

188364 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 in 7 ways as a sum of consecutive naturals, for example, 582 + ... + 845.

It is an arithmetic number, because the mean of its divisors is an integer number (19992).

2¹⁸⁸³⁶⁴ is an apocalyptic number.

It is an amenable number.

188364 is an abundant number, since it is smaller than the sum of its proper divisors (291444).

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

188364 is a wasteful number, since it uses less digits than its factorization.

188364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1443 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 188364 is about 434.0092164920. The cubic root of 188364 is about 57.3234914901.

The spelling of 188364 in words is "one hundred eighty-eight thousand, three hundred sixty-four".