188256401 has 2 divisors, whose sum is σ = 188256402. Its totient is φ = 188256400.

The previous prime is 188256349. The next prime is 188256437. The reversal of 188256401 is 104652881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121000000 + 67256401 = 11000^2 + 8201^2 .

It is a cyclic number.

It is not a de Polignac number, because 188256401 - 2⁶ = 188256337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (188256491) 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, 94128200 + 94128201.

It is an arithmetic number, because the mean of its divisors is an integer number (94128201).

Almost surely, 2^188256401 is an apocalyptic number.

It is an amenable number.

188256401 is a deficient number, since it is larger than the sum of its proper divisors (1).

188256401 is an equidigital number, since it uses as much as digits as its factorization.

188256401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 188256401 is about 13720.6559974369. The cubic root of 188256401 is about 573.1257446217.

The spelling of 188256401 in words is "one hundred eighty-eight million, two hundred fifty-six thousand, four hundred one".