518120887 has 8 divisors (see below), whose sum is σ = 540846720. Its totient is φ = 495770880.

The previous prime is 518120821. The next prime is 518120921. The reversal of 518120887 is 788021815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518120887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518120087) 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 7 ways as a sum of consecutive naturals, for example, 91138 + ... + 96655.

It is an arithmetic number, because the mean of its divisors is an integer number (67605840).

Almost surely, 2^518120887 is an apocalyptic number.

518120887 is a deficient number, since it is larger than the sum of its proper divisors (22725833).

518120887 is a wasteful number, since it uses less digits than its factorization.

518120887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187913.

The product of its (nonzero) digits is 35840, while the sum is 40.

The square root of 518120887 is about 22762.2689334785. The cubic root of 518120887 is about 803.1753418095.

The spelling of 518120887 in words is "five hundred eighteen million, one hundred twenty thousand, eight hundred eighty-seven".