518711049 has 12 divisors (see below), whose sum is σ = 767524212. Its totient is φ = 337372800.

The previous prime is 518711041. The next prime is 518711057. The reversal of 518711049 is 940117815.

It is an interprime number because it is at equal distance from previous prime (518711041) and next prime (518711057).

It can be written as a sum of positive squares in 2 ways, for example, as 147185424 + 371525625 = 12132^2 + 19275^2 .

It is not a de Polignac number, because 518711049 - 2³ = 518711041 is a prime.

It is a super-2 number, since 2×518711049² = 538122304709360802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (518711041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 702492 + ... + 703229.

It is an arithmetic number, because the mean of its divisors is an integer number (63960351).

Almost surely, 2^518711049 is an apocalyptic number.

It is an amenable number.

518711049 is a deficient number, since it is larger than the sum of its proper divisors (248813163).

518711049 is a wasteful number, since it uses less digits than its factorization.

518711049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405768 (or 1405765 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 518711049 is about 22775.2288462707. The cubic root of 518711049 is about 803.4801765315.

The spelling of 518711049 in words is "five hundred eighteen million, seven hundred eleven thousand, forty-nine".