1109982863809 has 2 divisors, whose sum is σ = 1109982863810. Its totient is φ = 1109982863808.

The previous prime is 1109982863807. The next prime is 1109982863909. The reversal of 1109982863809 is 9083682899011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1055339126209 + 54643737600 = 1027297^2 + 233760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109982863809 - 2¹ = 1109982863807 is a prime.

It is a super-3 number, since 3×1109982863809³ (a number of 37 digits) contains 333 as substring.

Together with 1109982863807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1109982863807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554991431904 + 554991431905.

It is an arithmetic number, because the mean of its divisors is an integer number (554991431905).

Almost surely, 2^{1109982863809} is an apocalyptic number.

It is an amenable number.

1109982863809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109982863809 is an equidigital number, since it uses as much as digits as its factorization.

1109982863809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13436928, while the sum is 64.

It can be divided in two parts, 1109982 and 863809, that added together give a palindrome (1973791).

The spelling of 1109982863809 in words is "one trillion, one hundred nine billion, nine hundred eighty-two million, eight hundred sixty-three thousand, eight hundred nine".