9638453884369 has 2 divisors, whose sum is σ = 9638453884370. Its totient is φ = 9638453884368.

The previous prime is 9638453884351. The next prime is 9638453884447. The reversal of 9638453884369 is 9634883548369.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9274844884369 + 363609000000 = 3045463^2 + 603000^2 .

It is a cyclic number.

It is not a de Polignac number, because 9638453884369 - 2²⁷ = 9638319666641 is a prime.

It is a super-2 number, since 2×9638453884369² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9638453884295 and 9638453884304.

It is not a weakly prime, because it can be changed into another prime (9638453885369) 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, 4819226942184 + 4819226942185.

It is an arithmetic number, because the mean of its divisors is an integer number (4819226942185).

Almost surely, 2^{9638453884369} is an apocalyptic number.

It is an amenable number.

9638453884369 is a deficient number, since it is larger than the sum of its proper divisors (1).

9638453884369 is an equidigital number, since it uses as much as digits as its factorization.

9638453884369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3224862720, while the sum is 76.

The spelling of 9638453884369 in words is "nine trillion, six hundred thirty-eight billion, four hundred fifty-three million, eight hundred eighty-four thousand, three hundred sixty-nine".