1245478499 has 2 divisors, whose sum is σ = 1245478500. Its totient is φ = 1245478498.

The previous prime is 1245478483. The next prime is 1245478501. The reversal of 1245478499 is 9948745421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1245478499 - 2⁴ = 1245478483 is a prime.

It is a Sophie Germain prime.

Together with 1245478501, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1245478499.

It is not a weakly prime, because it can be changed into another prime (1245478469) 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, 622739249 + 622739250.

It is an arithmetic number, because the mean of its divisors is an integer number (622739250).

Almost surely, 2^1245478499 is an apocalyptic number.

1245478499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245478499 is an equidigital number, since it uses as much as digits as its factorization.

1245478499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The square root of 1245478499 is about 35291.3374498615. The cubic root of 1245478499 is about 1075.9169386623.

The spelling of 1245478499 in words is "one billion, two hundred forty-five million, four hundred seventy-eight thousand, four hundred ninety-nine".