1318829648 has 20 divisors (see below), whose sum is σ = 2556065940. Its totient is φ = 659199744.

The previous prime is 1318829647. The next prime is 1318829663. The reversal of 1318829648 is 8469288131.

It can be written as a sum of positive squares in 2 ways, for example, as 568727104 + 750102544 = 23848^2 + 27388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1318829596 and 1318829605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318829641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44786 + ... + 68142.

It is an arithmetic number, because the mean of its divisors is an integer number (127803297).

Almost surely, 2^1318829648 is an apocalyptic number.

It is an amenable number.

1318829648 is a deficient number, since it is larger than the sum of its proper divisors (1237236292).

1318829648 is a wasteful number, since it uses less digits than its factorization.

1318829648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26894 (or 26888 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 1318829648 is about 36315.6942381665. The cubic root of 1318829648 is about 1096.6370149112.

The spelling of 1318829648 in words is "one billion, three hundred eighteen million, eight hundred twenty-nine thousand, six hundred forty-eight".