518000389 has 4 divisors (see below), whose sum is σ = 518048224. Its totient is φ = 517952556.

The previous prime is 518000369. The next prime is 518000419. The reversal of 518000389 is 983000815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 518000389 - 2²¹ = 515903237 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 (518000369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934 + ... + 32200.

It is an arithmetic number, because the mean of its divisors is an integer number (129512056).

Almost surely, 2^518000389 is an apocalyptic number.

It is an amenable number.

518000389 is a deficient number, since it is larger than the sum of its proper divisors (47835).

518000389 is a wasteful number, since it uses less digits than its factorization.

518000389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47834.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 518000389 is about 22759.6218993199. The cubic root of 518000389 is about 803.1130728626.

The spelling of 518000389 in words is "five hundred eighteen million, three hundred eighty-nine", and thus it is an aban number.