1189206292409 has 2 divisors, whose sum is σ = 1189206292410. Its totient is φ = 1189206292408.

The previous prime is 1189206292343. The next prime is 1189206292429. The reversal of 1189206292409 is 9042926029811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1119211653184 + 69994639225 = 1057928^2 + 264565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189206292409 - 2²⁰ = 1189205243833 is a prime.

It is a super-2 number, since 2×1189206292409² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1189206292429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594603146204 + 594603146205.

It is an arithmetic number, because the mean of its divisors is an integer number (594603146205).

Almost surely, 2^{1189206292409} is an apocalyptic number.

It is an amenable number.

1189206292409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189206292409 is an equidigital number, since it uses as much as digits as its factorization.

1189206292409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 1189206292409 in words is "one trillion, one hundred eighty-nine billion, two hundred six million, two hundred ninety-two thousand, four hundred nine".