188742233 has 2 divisors, whose sum is σ = 188742234. Its totient is φ = 188742232.

The previous prime is 188742223. The next prime is 188742241. The reversal of 188742233 is 332247881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186267904 + 2474329 = 13648^2 + 1573^2 .

It is a cyclic number.

It is not a de Polignac number, because 188742233 - 2¹⁰ = 188741209 is a prime.

It is not a weakly prime, because it can be changed into another prime (188742223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94371116 + 94371117.

It is an arithmetic number, because the mean of its divisors is an integer number (94371117).

Almost surely, 2^188742233 is an apocalyptic number.

It is an amenable number.

188742233 is a deficient number, since it is larger than the sum of its proper divisors (1).

188742233 is an equidigital number, since it uses as much as digits as its factorization.

188742233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 188742233 is about 13738.3489910542. The cubic root of 188742233 is about 573.6183416736.

The spelling of 188742233 in words is "one hundred eighty-eight million, seven hundred forty-two thousand, two hundred thirty-three".