1194330661 has 2 divisors, whose sum is σ = 1194330662. Its totient is φ = 1194330660.

The previous prime is 1194330653. The next prime is 1194330667. The reversal of 1194330661 is 1660334911.

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., 1108490436 + 85840225 = 33294^2 + 9265^2 .

It is an emirp because it is prime and its reverse (1660334911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1194330661 - 2³ = 1194330653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1194330667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597165330 + 597165331.

It is an arithmetic number, because the mean of its divisors is an integer number (597165331).

Almost surely, 2^1194330661 is an apocalyptic number.

It is an amenable number.

1194330661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1194330661 is an equidigital number, since it uses as much as digits as its factorization.

1194330661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1194330661 is about 34559.0894121937. The cubic root of 1194330661 is about 1060.9824346701.

The spelling of 1194330661 in words is "one billion, one hundred ninety-four million, three hundred thirty thousand, six hundred sixty-one".