1108769509 has 2 divisors, whose sum is σ = 1108769510. Its totient is φ = 1108769508.

The previous prime is 1108769507. The next prime is 1108769537. The reversal of 1108769509 is 9059678011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1054820484 + 53949025 = 32478^2 + 7345^2 .

It is an emirp because it is prime and its reverse (9059678011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1108769509 - 2¹ = 1108769507 is a prime.

Together with 1108769507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1108769507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554384754 + 554384755.

It is an arithmetic number, because the mean of its divisors is an integer number (554384755).

Almost surely, 2^1108769509 is an apocalyptic number.

It is an amenable number.

1108769509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1108769509 is an equidigital number, since it uses as much as digits as its factorization.

1108769509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 1108769509 is about 33298.1907766773. The cubic root of 1108769509 is about 1035.0160667144.

The spelling of 1108769509 in words is "one billion, one hundred eight million, seven hundred sixty-nine thousand, five hundred nine".