518620946 has 4 divisors (see below), whose sum is σ = 777931422. Its totient is φ = 259310472.

The previous prime is 518620943. The next prime is 518620967. The reversal of 518620946 is 649026815.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 393427225 + 125193721 = 19835^2 + 11189^2 .

It is not an unprimeable number, because it can be changed into a prime (518620943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129655235 + ... + 129655238.

Almost surely, 2^518620946 is an apocalyptic number.

518620946 is a deficient number, since it is larger than the sum of its proper divisors (259310476).

518620946 is a wasteful number, since it uses less digits than its factorization.

518620946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259310475.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 518620946 is about 22773.2506682731. The cubic root of 518620946 is about 803.4336508427.

The spelling of 518620946 in words is "five hundred eighteen million, six hundred twenty thousand, nine hundred forty-six".