5518487393 has 4 divisors (see below), whose sum is σ = 5521317888. Its totient is φ = 5515656900.

The previous prime is 5518487371. The next prime is 5518487423. The reversal of 5518487393 is 3937848155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5518487393 - 2¹⁴ = 5518471009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5518481393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412321 + ... + 1416222.

It is an arithmetic number, because the mean of its divisors is an integer number (1380329472).

Almost surely, 2^5518487393 is an apocalyptic number.

It is an amenable number.

5518487393 is a deficient number, since it is larger than the sum of its proper divisors (2830495).

5518487393 is a wasteful number, since it uses less digits than its factorization.

5518487393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830494.

The product of its digits is 3628800, while the sum is 53.

The square root of 5518487393 is about 74286.5222836552. The cubic root of 5518487393 is about 1767.1497417583.

The spelling of 5518487393 in words is "five billion, five hundred eighteen million, four hundred eighty-seven thousand, three hundred ninety-three".