1245839963 has 2 divisors, whose sum is σ = 1245839964. Its totient is φ = 1245839962.

The previous prime is 1245839941. The next prime is 1245839983. The reversal of 1245839963 is 3699385421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1245839963 - 2¹² = 1245835867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1245839983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622919981 + 622919982.

It is an arithmetic number, because the mean of its divisors is an integer number (622919982).

Almost surely, 2^1245839963 is an apocalyptic number.

1245839963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245839963 is an equidigital number, since it uses as much as digits as its factorization.

1245839963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 50.

The square root of 1245839963 is about 35296.4582217536. The cubic root of 1245839963 is about 1076.0210131536.

The spelling of 1245839963 in words is "one billion, two hundred forty-five million, eight hundred thirty-nine thousand, nine hundred sixty-three".