1688323201 has 2 divisors, whose sum is σ = 1688323202. Its totient is φ = 1688323200.

The previous prime is 1688323187. The next prime is 1688323229. The reversal of 1688323201 is 1023238861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1582130176 + 106193025 = 39776^2 + 10305^2 .

It is an emirp because it is prime and its reverse (1023238861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1688323201 - 2¹³ = 1688315009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1688323001) 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, 844161600 + 844161601.

It is an arithmetic number, because the mean of its divisors is an integer number (844161601).

Almost surely, 2^1688323201 is an apocalyptic number.

It is an amenable number.

1688323201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688323201 is an equidigital number, since it uses as much as digits as its factorization.

1688323201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1688323201 is about 41089.2102747181. The cubic root of 1688323201 is about 1190.7443501174.

The spelling of 1688323201 in words is "one billion, six hundred eighty-eight million, three hundred twenty-three thousand, two hundred one".