663148918 has 12 divisors (see below), whose sum is σ = 1006873308. Its totient is φ = 327572780.

The previous prime is 663148909. The next prime is 663148933. The reversal of 663148918 is 819841366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10288 + ... + 37843.

It is an arithmetic number, because the mean of its divisors is an integer number (83906109).

Almost surely, 2^663148918 is an apocalyptic number.

663148918 is a deficient number, since it is larger than the sum of its proper divisors (343724390).

663148918 is an equidigital number, since it uses as much as digits as its factorization.

663148918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48299 (or 48216 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 663148918 is about 25751.6779647463. The cubic root of 663148918 is about 872.0412359859.

The spelling of 663148918 in words is "six hundred sixty-three million, one hundred forty-eight thousand, nine hundred eighteen".