188630 has 16 divisors (see below), whose sum is σ = 365904. Its totient is φ = 69600.

The previous prime is 188621. The next prime is 188633. The reversal of 188630 is 36881.

188630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 188630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188633) by changing a digit.

188630 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, 596 + ... + 855.

It is an arithmetic number, because the mean of its divisors is an integer number (22869).

2¹⁸⁸⁶³⁰ is an apocalyptic number.

188630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188630 is a deficient number, since it is larger than the sum of its proper divisors (177274).

188630 is a wasteful number, since it uses less digits than its factorization.

188630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 188630 is about 434.3155534862. The cubic root of 188630 is about 57.3504621017.

It can be divided in two parts, 188 and 630, that added together give a palindrome (818).

The spelling of 188630 in words is "one hundred eighty-eight thousand, six hundred thirty".