2318403840 has 288 divisors, whose sum is σ = 7770470400. Its totient is φ = 588349440.

The previous prime is 2318403817. The next prime is 2318403847. The reversal of 2318403840 is 483048132.

It is not an unprimeable number, because it can be changed into a prime (2318403847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12138145 + ... + 12138335.

It is an arithmetic number, because the mean of its divisors is an integer number (26980800).

Almost surely, 2^2318403840 is an apocalyptic number.

2318403840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2318403840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3885235200).

2318403840 is an abundant number, since it is smaller than the sum of its proper divisors (5452066560).

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

2318403840 is a wasteful number, since it uses less digits than its factorization.

2318403840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 2318403840 is about 48149.8062301397. The cubic root of 2318403840 is about 1323.5175236277.

The spelling of 2318403840 in words is "two billion, three hundred eighteen million, four hundred three thousand, eight hundred forty".