1197115009 has 2 divisors, whose sum is σ = 1197115010. Its totient is φ = 1197115008.

The previous prime is 1197114979. The next prime is 1197115033. The reversal of 1197115009 is 9005117911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 811110400 + 386004609 = 28480^2 + 19647^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197115009 - 2⁵ = 1197114977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1197115039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598557504 + 598557505.

It is an arithmetic number, because the mean of its divisors is an integer number (598557505).

Almost surely, 2^1197115009 is an apocalyptic number.

It is an amenable number.

1197115009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197115009 is an equidigital number, since it uses as much as digits as its factorization.

1197115009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 34.

The square root of 1197115009 is about 34599.3498349319. The cubic root of 1197115009 is about 1061.8062856955.

The spelling of 1197115009 in words is "one billion, one hundred ninety-seven million, one hundred fifteen thousand, nine".