518061816 has 24 divisors (see below), whose sum is σ = 1403084280. Its totient is φ = 172687248.

The previous prime is 518061811. The next prime is 518061851. The reversal of 518061816 is 618160815.

518061816 is a `hidden beast` number, since 518 + 0 + 61 + 81 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518061811) 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 in 5 ways as a sum of consecutive naturals, for example, 3597580 + ... + 3597723.

It is an arithmetic number, because the mean of its divisors is an integer number (58461845).

Almost surely, 2^518061816 is an apocalyptic number.

It is an amenable number.

518061816 is an abundant number, since it is smaller than the sum of its proper divisors (885022464).

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

518061816 is a wasteful number, since it uses less digits than its factorization.

518061816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195315 (or 7195308 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 518061816 is about 22760.9713325245. The cubic root of 518061816 is about 803.1448172897.

The spelling of 518061816 in words is "five hundred eighteen million, sixty-one thousand, eight hundred sixteen".