188472113 has 2 divisors, whose sum is σ = 188472114. Its totient is φ = 188472112.

The previous prime is 188472107. The next prime is 188472197. The reversal of 188472113 is 311274881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149621824 + 38850289 = 12232^2 + 6233^2 .

It is an emirp because it is prime and its reverse (311274881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188472113 - 2¹⁸ = 188209969 is a prime.

It is not a weakly prime, because it can be changed into another prime (188472103) 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 as a sum of consecutive naturals, namely, 94236056 + 94236057.

It is an arithmetic number, because the mean of its divisors is an integer number (94236057).

Almost surely, 2^188472113 is an apocalyptic number.

It is an amenable number.

188472113 is a deficient number, since it is larger than the sum of its proper divisors (1).

188472113 is an equidigital number, since it uses as much as digits as its factorization.

188472113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 35.

The square root of 188472113 is about 13728.5145955416. The cubic root of 188472113 is about 573.3445648226.

The spelling of 188472113 in words is "one hundred eighty-eight million, four hundred seventy-two thousand, one hundred thirteen".