1245288349 has 2 divisors, whose sum is σ = 1245288350. Its totient is φ = 1245288348.

The previous prime is 1245288283. The next prime is 1245288377. The reversal of 1245288349 is 9438825421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 635544100 + 609744249 = 25210^2 + 24693^2 .

It is an emirp because it is prime and its reverse (9438825421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1245288349 - 2¹⁹ = 1244764061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245288299 and 1245288308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245288389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622644174 + 622644175.

It is an arithmetic number, because the mean of its divisors is an integer number (622644175).

Almost surely, 2^1245288349 is an apocalyptic number.

It is an amenable number.

1245288349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245288349 is an equidigital number, since it uses as much as digits as its factorization.

1245288349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 46.

The square root of 1245288349 is about 35288.6433431494. The cubic root of 1245288349 is about 1075.8621816570.

The spelling of 1245288349 in words is "one billion, two hundred forty-five million, two hundred eighty-eight thousand, three hundred forty-nine".