1682438840449 has 2 divisors, whose sum is σ = 1682438840450. Its totient is φ = 1682438840448.

The previous prime is 1682438840287. The next prime is 1682438840461. The reversal of 1682438840449 is 9440488342861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1076680167424 + 605758673025 = 1037632^2 + 778305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1682438840449 - 2¹¹ = 1682438838401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1682438040449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841219420224 + 841219420225.

It is an arithmetic number, because the mean of its divisors is an integer number (841219420225).

Almost surely, 2^{1682438840449} is an apocalyptic number.

It is an amenable number.

1682438840449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1682438840449 is an equidigital number, since it uses as much as digits as its factorization.

1682438840449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42467328, while the sum is 61.

The spelling of 1682438840449 in words is "one trillion, six hundred eighty-two billion, four hundred thirty-eight million, eight hundred forty thousand, four hundred forty-nine".