2318733440 has 64 divisors (see below), whose sum is σ = 5549071320. Its totient is φ = 926515200.

The previous prime is 2318733437. The next prime is 2318733449. The reversal of 2318733440 is 443378132.

It can be written as a sum of positive squares in 4 ways, for example, as 894727744 + 1424005696 = 29912^2 + 37736^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 2318733440.

It is not an unprimeable number, because it can be changed into a prime (2318733449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113200 + ... + 1115280.

Almost surely, 2^2318733440 is an apocalyptic number.

2318733440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2318733440 is an abundant number, since it is smaller than the sum of its proper divisors (3230337880).

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

2318733440 is a wasteful number, since it uses less digits than its factorization.

2318733440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841 (or 3829 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 2318733440 is about 48153.2287598661. The cubic root of 2318733440 is about 1323.5802407289.

The spelling of 2318733440 in words is "two billion, three hundred eighteen million, seven hundred thirty-three thousand, four hundred forty".