1318846447 has 2 divisors, whose sum is σ = 1318846448. Its totient is φ = 1318846446.

The previous prime is 1318846439. The next prime is 1318846493. The reversal of 1318846447 is 7446488131.

It is an a-pointer prime, because the next prime (1318846493) can be obtained adding 1318846447 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1318846447 - 2³ = 1318846439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1318846397 and 1318846406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318846147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659423223 + 659423224.

It is an arithmetic number, because the mean of its divisors is an integer number (659423224).

Almost surely, 2^1318846447 is an apocalyptic number.

1318846447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318846447 is an equidigital number, since it uses as much as digits as its factorization.

1318846447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 46.

The square root of 1318846447 is about 36315.9255286162. The cubic root of 1318846447 is about 1096.6416711423.

The spelling of 1318846447 in words is "one billion, three hundred eighteen million, eight hundred forty-six thousand, four hundred forty-seven".