5518487438 has 4 divisors (see below), whose sum is σ = 8277731160. Its totient is φ = 2759243718.

The previous prime is 5518487437. The next prime is 5518487441. The reversal of 5518487438 is 8347848155.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5518487438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518487437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1379621858 + ... + 1379621861.

It is an arithmetic number, because the mean of its divisors is an integer number (2069432790).

Almost surely, 2^5518487438 is an apocalyptic number.

5518487438 is a deficient number, since it is larger than the sum of its proper divisors (2759243722).

5518487438 is a wasteful number, since it uses less digits than its factorization.

5518487438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759243721.

The product of its digits is 4300800, while the sum is 53.

The square root of 5518487438 is about 74286.5225865365. The cubic root of 5518487438 is about 1767.1497465617.

The spelling of 5518487438 in words is "five billion, five hundred eighteen million, four hundred eighty-seven thousand, four hundred thirty-eight".