5518387519 has 2 divisors, whose sum is σ = 5518387520. Its totient is φ = 5518387518.

The previous prime is 5518387517. The next prime is 5518387529. The reversal of 5518387519 is 9157838155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5518387519 - 2¹ = 5518387517 is a prime.

It is a super-2 number, since 2×5518387519² = 60905201619709950722, which contains 22 as substring.

Together with 5518387517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5518387517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2759193759 + 2759193760.

It is an arithmetic number, because the mean of its divisors is an integer number (2759193760).

Almost surely, 2^5518387519 is an apocalyptic number.

5518387519 is a deficient number, since it is larger than the sum of its proper divisors (1).

5518387519 is an equidigital number, since it uses as much as digits as its factorization.

5518387519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 52.

The square root of 5518387519 is about 74285.8500590792. The cubic root of 5518387519 is about 1767.1390810243.

The spelling of 5518387519 in words is "five billion, five hundred eighteen million, three hundred eighty-seven thousand, five hundred nineteen".