1224533993 has 2 divisors, whose sum is σ = 1224533994. Its totient is φ = 1224533992.

The previous prime is 1224533977. The next prime is 1224534011. The reversal of 1224533993 is 3993354221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 961186009 + 263347984 = 31003^2 + 16228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224533993 - 2⁴ = 1224533977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224533993.

It is not a weakly prime, because it can be changed into another prime (1224532993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612266996 + 612266997.

It is an arithmetic number, because the mean of its divisors is an integer number (612266997).

Almost surely, 2^1224533993 is an apocalyptic number.

It is an amenable number.

1224533993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224533993 is an equidigital number, since it uses as much as digits as its factorization.

1224533993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 41.

The square root of 1224533993 is about 34993.3421238955. The cubic root of 1224533993 is about 1069.8517839945.

The spelling of 1224533993 in words is "one billion, two hundred twenty-four million, five hundred thirty-three thousand, nine hundred ninety-three".