1318852240 has 20 divisors (see below), whose sum is σ = 3066331644. Its totient is φ = 527540864.

The previous prime is 1318852219. The next prime is 1318852253. The reversal of 1318852240 is 422588131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 814759936 + 504092304 = 28544^2 + 22452^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1318852196 and 1318852205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8242747 + ... + 8242906.

Almost surely, 2^1318852240 is an apocalyptic number.

1318852240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1318852240 is an abundant number, since it is smaller than the sum of its proper divisors (1747479404).

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

1318852240 is a wasteful number, since it uses less digits than its factorization.

1318852240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16485666 (or 16485660 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1318852240 is about 36316.0052869255. The cubic root of 1318852240 is about 1096.6432767970.

The spelling of 1318852240 in words is "one billion, three hundred eighteen million, eight hundred fifty-two thousand, two hundred forty".