5518993920 has 240 divisors, whose sum is σ = 19396571040. Its totient is φ = 1337712640.

The previous prime is 5518993919. The next prime is 5518993967. The reversal of 5518993920 is 293998155.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 926311 + ... + 932249.

It is an arithmetic number, because the mean of its divisors is an integer number (80819046).

Almost surely, 2^5518993920 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 5518993920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9698285520).

5518993920 is an abundant number, since it is smaller than the sum of its proper divisors (13877577120).

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

5518993920 is a wasteful number, since it uses less digits than its factorization.

5518993920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987 (or 5960 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 51.

The square root of 5518993920 is about 74289.9314846904. The cubic root of 5518993920 is about 1767.2038073992.

The spelling of 5518993920 in words is "five billion, five hundred eighteen million, nine hundred ninety-three thousand, nine hundred twenty".