1315604447 has 2 divisors, whose sum is σ = 1315604448. Its totient is φ = 1315604446.

The previous prime is 1315604413. The next prime is 1315604489. The reversal of 1315604447 is 7444065131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315604447 - 2⁶ = 1315604383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315604047) 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, 657802223 + 657802224.

It is an arithmetic number, because the mean of its divisors is an integer number (657802224).

Almost surely, 2^1315604447 is an apocalyptic number.

1315604447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315604447 is an equidigital number, since it uses as much as digits as its factorization.

1315604447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 1315604447 is about 36271.2619989986. The cubic root of 1315604447 is about 1095.7423424084.

Adding to 1315604447 its reverse (7444065131), we get a palindrome (8759669578).

The spelling of 1315604447 in words is "one billion, three hundred fifteen million, six hundred four thousand, four hundred forty-seven".