1166400233 has 2 divisors, whose sum is σ = 1166400234. Its totient is φ = 1166400232.

The previous prime is 1166400227. The next prime is 1166400251. The reversal of 1166400233 is 3320046611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667860649 + 498539584 = 25843^2 + 22328^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166400233 - 2²² = 1162205929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1166400223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583200116 + 583200117.

It is an arithmetic number, because the mean of its divisors is an integer number (583200117).

Almost surely, 2^1166400233 is an apocalyptic number.

It is an amenable number.

1166400233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166400233 is an equidigital number, since it uses as much as digits as its factorization.

1166400233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1166400233 is about 34152.6021409790. The cubic root of 1166400233 is about 1052.6464558488.

Adding to 1166400233 its reverse (3320046611), we get a palindrome (4486446844).

The spelling of 1166400233 in words is "one billion, one hundred sixty-six million, four hundred thousand, two hundred thirty-three".