188054257 has 2 divisors, whose sum is σ = 188054258. Its totient is φ = 188054256.

The previous prime is 188054231. The next prime is 188054263. The reversal of 188054257 is 752450881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178062336 + 9991921 = 13344^2 + 3161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188054257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (188054957) 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, 94027128 + 94027129.

It is an arithmetic number, because the mean of its divisors is an integer number (94027129).

Almost surely, 2^188054257 is an apocalyptic number.

It is an amenable number.

188054257 is a deficient number, since it is larger than the sum of its proper divisors (1).

188054257 is an equidigital number, since it uses as much as digits as its factorization.

188054257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 188054257 is about 13713.2876072808. The cubic root of 188054257 is about 572.9205361552.

The spelling of 188054257 in words is "one hundred eighty-eight million, fifty-four thousand, two hundred fifty-seven".