1118345089 has 2 divisors, whose sum is σ = 1118345090. Its totient is φ = 1118345088.

The previous prime is 1118345027. The next prime is 1118345117. The reversal of 1118345089 is 9805438111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1114424689 + 3920400 = 33383^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118345089 - 2¹¹ = 1118343041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118340089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559172544 + 559172545.

It is an arithmetic number, because the mean of its divisors is an integer number (559172545).

Almost surely, 2^1118345089 is an apocalyptic number.

It is an amenable number.

1118345089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118345089 is an equidigital number, since it uses as much as digits as its factorization.

1118345089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1118345089 is about 33441.6669590498. Note that the first 3 decimals coincide. The cubic root of 1118345089 is about 1037.9870732585.

The spelling of 1118345089 in words is "one billion, one hundred eighteen million, three hundred forty-five thousand, eighty-nine".