1116078209 has 2 divisors, whose sum is σ = 1116078210. Its totient is φ = 1116078208.

The previous prime is 1116078199. The next prime is 1116078247. The reversal of 1116078209 is 9028706111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 963481600 + 152596609 = 31040^2 + 12353^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116078209 - 2¹⁶ = 1116012673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116078409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558039104 + 558039105.

It is an arithmetic number, because the mean of its divisors is an integer number (558039105).

Almost surely, 2^1116078209 is an apocalyptic number.

It is an amenable number.

1116078209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116078209 is an equidigital number, since it uses as much as digits as its factorization.

1116078209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1116078209 is about 33407.7567190615. The cubic root of 1116078209 is about 1037.2852672932.

The spelling of 1116078209 in words is "one billion, one hundred sixteen million, seventy-eight thousand, two hundred nine".