188364330 has 216 divisors, whose sum is σ = 627979716. Its totient is φ = 39029760.

The previous prime is 188364329. The next prime is 188364353. The reversal of 188364330 is 33463881.

It is a happy number.

188364330 is a `hidden beast` number, since 1 + 8 + 8 + 3 + 643 + 3 + 0 = 666.

188364330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 185749641 + 2614689 = 13629^2 + 1617^2 .

It is a super-2 number, since 2×188364330² = 70962241632697800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 533434 + ... + 533786.

Almost surely, 2^188364330 is an apocalyptic number.

188364330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 188364330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313989858).

188364330 is an abundant number, since it is smaller than the sum of its proper divisors (439615386).

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

188364330 is a wasteful number, since it uses less digits than its factorization.

188364330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 188364330 is about 13724.5885184220. The cubic root of 188364330 is about 573.2352496565.

The spelling of 188364330 in words is "one hundred eighty-eight million, three hundred sixty-four thousand, three hundred thirty".