1318688448 has 224 divisors, whose sum is σ = 4382097408. Its totient is φ = 339993600.

The previous prime is 1318688411. The next prime is 1318688491. The reversal of 1318688448 is 8448868131.

It is a tau number, because it is divible by the number of its divisors (224).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1318688448.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2823511 + ... + 2823977.

Almost surely, 2^1318688448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1318688448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2191048704).

1318688448 is an abundant number, since it is smaller than the sum of its proper divisors (3063408960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1318688448 is a wasteful number, since it uses less digits than its factorization.

1318688448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 681 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 51.

The square root of 1318688448 is about 36313.7501230594. The cubic root of 1318688448 is about 1096.5978765046.

The spelling of 1318688448 in words is "one billion, three hundred eighteen million, six hundred eighty-eight thousand, four hundred forty-eight".