1197668611 has 2 divisors, whose sum is σ = 1197668612. Its totient is φ = 1197668610.

The previous prime is 1197668609. The next prime is 1197668621. The reversal of 1197668611 is 1168667911.

It is a weak prime.

It is an emirp because it is prime and its reverse (1168667911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1197668611 - 2¹ = 1197668609 is a prime.

Together with 1197668609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1197668621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598834305 + 598834306.

It is an arithmetic number, because the mean of its divisors is an integer number (598834306).

Almost surely, 2^1197668611 is an apocalyptic number.

1197668611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197668611 is an equidigital number, since it uses as much as digits as its factorization.

1197668611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The square root of 1197668611 is about 34607.3490894636. The cubic root of 1197668611 is about 1061.9699367763.

The spelling of 1197668611 in words is "one billion, one hundred ninety-seven million, six hundred sixty-eight thousand, six hundred eleven".