1119809849 has 4 divisors (see below), whose sum is σ = 1120228980. Its totient is φ = 1119390720.

The previous prime is 1119809843. The next prime is 1119809861. The reversal of 1119809849 is 9489089111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356945449 + 762864400 = 18893^2 + 27620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1119809849 - 2¹⁶ = 1119744313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1119809797 and 1119809806.

It is not an unprimeable number, because it can be changed into a prime (1119809843) 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 in 3 ways as a sum of consecutive naturals, for example, 205532 + ... + 210909.

It is an arithmetic number, because the mean of its divisors is an integer number (280057245).

Almost surely, 2^1119809849 is an apocalyptic number.

It is an amenable number.

1119809849 is a deficient number, since it is larger than the sum of its proper divisors (419131).

1119809849 is an equidigital number, since it uses as much as digits as its factorization.

1119809849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419130.

The product of its (nonzero) digits is 186624, while the sum is 50.

The square root of 1119809849 is about 33463.5600168302. The cubic root of 1119809849 is about 1038.4400457376.

The spelling of 1119809849 in words is "one billion, one hundred nineteen million, eight hundred nine thousand, eight hundred forty-nine".