1166400223 has 2 divisors, whose sum is σ = 1166400224. Its totient is φ = 1166400222.

The previous prime is 1166400197. The next prime is 1166400227. The reversal of 1166400223 is 3220046611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166400223 - 2⁹ = 1166399711 is a prime.

It is a super-3 number, since 3×1166400223³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166400227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583200111 + 583200112.

It is an arithmetic number, because the mean of its divisors is an integer number (583200112).

Almost surely, 2^1166400223 is an apocalyptic number.

1166400223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166400223 is an equidigital number, since it uses as much as digits as its factorization.

1166400223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1166400223 is about 34152.6019945772. The cubic root of 1166400223 is about 1052.6464528406.

Adding to 1166400223 its reverse (3220046611), we get a palindrome (4386446834).

The spelling of 1166400223 in words is "one billion, one hundred sixty-six million, four hundred thousand, two hundred twenty-three".