5218393440 has 192 divisors, whose sum is σ = 18744094656. Its totient is φ = 1208942592.

The previous prime is 5218393417. The next prime is 5218393501. The reversal of 5218393440 is 443938125.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81484 + ... + 130676.

It is an arithmetic number, because the mean of its divisors is an integer number (97625493).

Almost surely, 2^5218393440 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 5218393440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9372047328).

5218393440 is an abundant number, since it is smaller than the sum of its proper divisors (13525701216).

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

5218393440 is a wasteful number, since it uses less digits than its factorization.

5218393440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49241 (or 49233 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 5218393440 is about 72238.4484883223. The cubic root of 5218393440 is about 1734.5185142245.

The spelling of 5218393440 in words is "five billion, two hundred eighteen million, three hundred ninety-three thousand, four hundred forty".