188702113 has 4 divisors (see below), whose sum is σ = 188876800. Its totient is φ = 188527428.

The previous prime is 188702081. The next prime is 188702117. The reversal of 188702113 is 311207881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311207881 = 4229 ⋅73589.

It is a cyclic number.

It is not a de Polignac number, because 188702113 - 2⁵ = 188702081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188702117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85713 + ... + 87886.

It is an arithmetic number, because the mean of its divisors is an integer number (47219200).

Almost surely, 2^188702113 is an apocalyptic number.

It is an amenable number.

188702113 is a deficient number, since it is larger than the sum of its proper divisors (174687).

188702113 is a wasteful number, since it uses less digits than its factorization.

188702113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174686.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 188702113 is about 13736.8887671117. Note that the first 3 decimals coincide. The cubic root of 188702113 is about 573.5776950585.

Adding to 188702113 its reverse (311207881), we get a palindrome (499909994).

The spelling of 188702113 in words is "one hundred eighty-eight million, seven hundred two thousand, one hundred thirteen".