1116078409 has 2 divisors, whose sum is σ = 1116078410. Its totient is φ = 1116078408.

The previous prime is 1116078401. The next prime is 1116078437. The reversal of 1116078409 is 9048706111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 579461184 + 536617225 = 24072^2 + 23165^2 .

It is an emirp because it is prime and its reverse (9048706111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1116078409 - 2³ = 1116078401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116078401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558039204 + 558039205.

It is an arithmetic number, because the mean of its divisors is an integer number (558039205).

Almost surely, 2^1116078409 is an apocalyptic number.

It is an amenable number.

1116078409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116078409 is an equidigital number, since it uses as much as digits as its factorization.

1116078409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1116078409 is about 33407.7597123782. The cubic root of 1116078409 is about 1037.2853292534.

The spelling of 1116078409 in words is "one billion, one hundred sixteen million, seventy-eight thousand, four hundred nine".