1194166993 has 2 divisors, whose sum is σ = 1194166994. Its totient is φ = 1194166992.

The previous prime is 1194166957. The next prime is 1194166997. The reversal of 1194166993 is 3996614911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658846224 + 535320769 = 25668^2 + 23137^2 .

It is an emirp because it is prime and its reverse (3996614911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1194166993 - 2²¹ = 1192069841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1194166997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597083496 + 597083497.

It is an arithmetic number, because the mean of its divisors is an integer number (597083497).

Almost surely, 2^1194166993 is an apocalyptic number.

It is an amenable number.

1194166993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1194166993 is an equidigital number, since it uses as much as digits as its factorization.

1194166993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 49.

The square root of 1194166993 is about 34556.7213867288. The cubic root of 1194166993 is about 1060.9339676887.

The spelling of 1194166993 in words is "one billion, one hundred ninety-four million, one hundred sixty-six thousand, nine hundred ninety-three".