518116842 has 24 divisors (see below), whose sum is σ = 1161297540. Its totient is φ = 166750080.

The previous prime is 518116751. The next prime is 518116889. The reversal of 518116842 is 248611815.

It can be written as a sum of positive squares in 2 ways, for example, as 516698361 + 1418481 = 22731^2 + 1191^2 .

It is a junction number, because it is equal to n+sod(n) for n = 518116797 and 518116806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 495759 + ... + 496802.

Almost surely, 2^518116842 is an apocalyptic number.

518116842 is an abundant number, since it is smaller than the sum of its proper divisors (643180698).

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

518116842 is a wasteful number, since it uses less digits than its factorization.

518116842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992598 (or 992595 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 518116842 is about 22762.1800801241. The cubic root of 518116842 is about 803.1732516585.

It can be divided in two parts, 51811 and 6842, that added together give a triangular number (58653 = T₃₄₂).

The spelling of 518116842 in words is "five hundred eighteen million, one hundred sixteen thousand, eight hundred forty-two".