1194218396009 has 2 divisors, whose sum is σ = 1194218396010. Its totient is φ = 1194218396008.

The previous prime is 1194218395987. The next prime is 1194218396047. The reversal of 1194218396009 is 9006938124911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 977181675625 + 217036720384 = 988525^2 + 465872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1194218396009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1194218396069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597109198004 + 597109198005.

It is an arithmetic number, because the mean of its divisors is an integer number (597109198005).

Almost surely, 2^{1194218396009} is an apocalyptic number.

It is an amenable number.

1194218396009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1194218396009 is an equidigital number, since it uses as much as digits as its factorization.

1194218396009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 1194218396009 in words is "one trillion, one hundred ninety-four billion, two hundred eighteen million, three hundred ninety-six thousand, nine".