1005243797 has 2 divisors, whose sum is σ = 1005243798. Its totient is φ = 1005243796.

The previous prime is 1005243769. The next prime is 1005243817. The reversal of 1005243797 is 7973425001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 929884036 + 75359761 = 30494^2 + 8681^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005243797 - 2¹² = 1005239701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1005243797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005243397) 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, 502621898 + 502621899.

It is an arithmetic number, because the mean of its divisors is an integer number (502621899).

Almost surely, 2^1005243797 is an apocalyptic number.

It is an amenable number.

1005243797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005243797 is an equidigital number, since it uses as much as digits as its factorization.

1005243797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1005243797 is about 31705.5799032284. The cubic root of 1005243797 is about 1001.7448859356.

Adding to 1005243797 its reverse (7973425001), we get a palindrome (8978668798).

The spelling of 1005243797 in words is "one billion, five million, two hundred forty-three thousand, seven hundred ninety-seven".