1689847369913 has 2 divisors, whose sum is σ = 1689847369914. Its totient is φ = 1689847369912.

The previous prime is 1689847369901. The next prime is 1689847370027. The reversal of 1689847369913 is 3199637489861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1269389795584 + 420457574329 = 1126672^2 + 648427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1689847369913 - 2¹⁰ = 1689847368889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1689847369013) 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, 844923684956 + 844923684957.

It is an arithmetic number, because the mean of its divisors is an integer number (844923684957).

Almost surely, 2^{1689847369913} is an apocalyptic number.

It is an amenable number.

1689847369913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689847369913 is an equidigital number, since it uses as much as digits as its factorization.

1689847369913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423263232, while the sum is 74.

The spelling of 1689847369913 in words is "one trillion, six hundred eighty-nine billion, eight hundred forty-seven million, three hundred sixty-nine thousand, nine hundred thirteen".