1318384447 has 16 divisors (see below), whose sum is σ = 1351584000. Its totient is φ = 1285748352.

The previous prime is 1318384439. The next prime is 1318384477. The reversal of 1318384447 is 7444838131.

It is not a de Polignac number, because 1318384447 - 2³ = 1318384439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318384427) 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 in 15 ways as a sum of consecutive naturals, for example, 2641804 + ... + 2642302.

It is an arithmetic number, because the mean of its divisors is an integer number (84474000).

Almost surely, 2^1318384447 is an apocalyptic number.

1318384447 is a deficient number, since it is larger than the sum of its proper divisors (33199553).

1318384447 is a wasteful number, since it uses less digits than its factorization.

1318384447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942.

The product of its digits is 258048, while the sum is 43.

The square root of 1318384447 is about 36309.5641257231. The cubic root of 1318384447 is about 1096.5136027521.

The spelling of 1318384447 in words is "one billion, three hundred eighteen million, three hundred eighty-four thousand, four hundred forty-seven".