518490382 has 4 divisors (see below), whose sum is σ = 777735576. Its totient is φ = 259245190.

The previous prime is 518490377. The next prime is 518490389. The reversal of 518490382 is 283094815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 283094815 = 5 ⋅56618963.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518490389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129622594 + ... + 129622597.

It is an arithmetic number, because the mean of its divisors is an integer number (194433894).

Almost surely, 2^518490382 is an apocalyptic number.

518490382 is a deficient number, since it is larger than the sum of its proper divisors (259245194).

518490382 is a wasteful number, since it uses less digits than its factorization.

518490382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259245193.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 518490382 is about 22770.3838790654. The cubic root of 518490382 is about 803.3662231024.

The spelling of 518490382 in words is "five hundred eighteen million, four hundred ninety thousand, three hundred eighty-two".