188030530 has 8 divisors (see below), whose sum is σ = 338454972. Its totient is φ = 75212208.

The previous prime is 188030527. The next prime is 188030533. The reversal of 188030530 is 35030881.

It is an interprime number because it is at equal distance from previous prime (188030527) and next prime (188030533).

It can be written as a sum of positive squares in 2 ways, for example, as 162639009 + 25391521 = 12753^2 + 5039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (188030533) 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, 9401517 + ... + 9401536.

Almost surely, 2^188030530 is an apocalyptic number.

188030530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188030530 is a deficient number, since it is larger than the sum of its proper divisors (150424442).

188030530 is a wasteful number, since it uses less digits than its factorization.

188030530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18803060.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 188030530 is about 13712.4224701546. The cubic root of 188030530 is about 572.8964398163.

The spelling of 188030530 in words is "one hundred eighty-eight million, thirty thousand, five hundred thirty".