1688059453 has 2 divisors, whose sum is σ = 1688059454. Its totient is φ = 1688059452.

The previous prime is 1688059411. The next prime is 1688059469. The reversal of 1688059453 is 3549508861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612664964 + 75394489 = 40158^2 + 8683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1688059453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1688059397 and 1688059406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1688059853) 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, 844029726 + 844029727.

It is an arithmetic number, because the mean of its divisors is an integer number (844029727).

Almost surely, 2^1688059453 is an apocalyptic number.

It is an amenable number.

1688059453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688059453 is an equidigital number, since it uses as much as digits as its factorization.

1688059453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The square root of 1688059453 is about 41086.0006936669. Note that the first 3 decimals coincide. The cubic root of 1688059453 is about 1190.6823412959.

The spelling of 1688059453 in words is "one billion, six hundred eighty-eight million, fifty-nine thousand, four hundred fifty-three".