517618842 has 32 divisors (see below), whose sum is σ = 1150840320. Its totient is φ = 154128960.

The previous prime is 517618831. The next prime is 517618847. The reversal of 517618842 is 248816715.

It is a junction number, because it is equal to n+sod(n) for n = 517618794 and 517618803.

It is not an unprimeable number, because it can be changed into a prime (517618847) 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 15 ways as a sum of consecutive naturals, for example, 104617 + ... + 109452.

It is an arithmetic number, because the mean of its divisors is an integer number (35963760).

Almost surely, 2^517618842 is an apocalyptic number.

517618842 is an abundant number, since it is smaller than the sum of its proper divisors (633221478).

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

517618842 is a wasteful number, since it uses less digits than its factorization.

517618842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214118.

The product of its digits is 107520, while the sum is 42.

The square root of 517618842 is about 22751.2382520161. The cubic root of 517618842 is about 802.9158396454.

The spelling of 517618842 in words is "five hundred seventeen million, six hundred eighteen thousand, eight hundred forty-two".