1243252193 has 2 divisors, whose sum is σ = 1243252194. Its totient is φ = 1243252192.

The previous prime is 1243252187. The next prime is 1243252229. The reversal of 1243252193 is 3912523421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 935319889 + 307932304 = 30583^2 + 17548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243252193 - 2¹⁴ = 1243235809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1243252093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621626096 + 621626097.

It is an arithmetic number, because the mean of its divisors is an integer number (621626097).

Almost surely, 2^1243252193 is an apocalyptic number.

It is an amenable number.

1243252193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243252193 is an equidigital number, since it uses as much as digits as its factorization.

1243252193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 1243252193 is about 35259.7815222953. The cubic root of 1243252193 is about 1075.2754853367.

The spelling of 1243252193 in words is "one billion, two hundred forty-three million, two hundred fifty-two thousand, one hundred ninety-three".