188976133 has 2 divisors, whose sum is σ = 188976134. Its totient is φ = 188976132.

The previous prime is 188976077. The next prime is 188976157. The reversal of 188976133 is 331679881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169598529 + 19377604 = 13023^2 + 4402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188976133 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188976173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94488066 + 94488067.

It is an arithmetic number, because the mean of its divisors is an integer number (94488067).

Almost surely, 2^188976133 is an apocalyptic number.

It is an amenable number.

188976133 is a deficient number, since it is larger than the sum of its proper divisors (1).

188976133 is an equidigital number, since it uses as much as digits as its factorization.

188976133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 188976133 is about 13746.8590230641. The cubic root of 188976133 is about 573.8551972389.

The spelling of 188976133 in words is "one hundred eighty-eight million, nine hundred seventy-six thousand, one hundred thirty-three".