648549318 has 8 divisors (see below), whose sum is σ = 1297098648. Its totient is φ = 216183104.

The previous prime is 648549281. The next prime is 648549323. The reversal of 648549318 is 813945846.

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

648549318 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 54045771 + ... + 54045782.

It is an arithmetic number, because the mean of its divisors is an integer number (162137331).

Almost surely, 2^648549318 is an apocalyptic number.

648549318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

648549318 is a wasteful number, since it uses less digits than its factorization.

648549318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108091558.

The product of its digits is 829440, while the sum is 48.

The square root of 648549318 is about 25466.6314615813. The cubic root of 648549318 is about 865.5941958533.

The spelling of 648549318 in words is "six hundred forty-eight million, five hundred forty-nine thousand, three hundred eighteen".