5318490640 has 160 divisors (see below), whose sum is σ = 13407534720. Its totient is φ = 1955745792.

The previous prime is 5318490601. The next prime is 5318490673. The reversal of 5318490640 is 460948135.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 5318490593 and 5318490602.

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 31 ways as a sum of consecutive naturals, for example, 8619612 + ... + 8620228.

It is an arithmetic number, because the mean of its divisors is an integer number (83797092).

Almost surely, 2^5318490640 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 5318490640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6703767360).

5318490640 is an abundant number, since it is smaller than the sum of its proper divisors (8089044080).

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

5318490640 is a wasteful number, since it uses less digits than its factorization.

5318490640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 5318490640 is about 72927.9825581374. The cubic root of 5318490640 is about 1745.5386377244.

The spelling of 5318490640 in words is "five billion, three hundred eighteen million, four hundred ninety thousand, six hundred forty".