5418444640 has 96 divisors (see below), whose sum is σ = 14655380544. Its totient is φ = 1854504960.

The previous prime is 5418444623. The next prime is 5418444641. The reversal of 5418444640 is 464448145.

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 = 5418444593 and 5418444602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5418444641) 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 15 ways as a sum of consecutive naturals, for example, 687120 + ... + 694960.

It is an arithmetic number, because the mean of its divisors is an integer number (152660214).

Almost surely, 2^5418444640 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 5418444640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7327690272).

5418444640 is an abundant number, since it is smaller than the sum of its proper divisors (9236935904).

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

5418444640 is a wasteful number, since it uses less digits than its factorization.

5418444640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480 (or 8472 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 40.

The square root of 5418444640 is about 73610.0851785949. The cubic root of 5418444640 is about 1756.4058712819.

The spelling of 5418444640 in words is "five billion, four hundred eighteen million, four hundred forty-four thousand, six hundred forty".