478643618 has 16 divisors (see below), whose sum is σ = 737964864. Its totient is φ = 232665840.

The previous prime is 478643609. The next prime is 478643623. The reversal of 478643618 is 816346874.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 148403 + ... + 151593.

It is an arithmetic number, because the mean of its divisors is an integer number (46122804).

Almost surely, 2^478643618 is an apocalyptic number.

478643618 is a deficient number, since it is larger than the sum of its proper divisors (259321246).

478643618 is a wasteful number, since it uses less digits than its factorization.

478643618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5257.

The product of its digits is 774144, while the sum is 47.

The square root of 478643618 is about 21877.9253586806. The cubic root of 478643618 is about 782.2353246811.

The spelling of 478643618 in words is "four hundred seventy-eight million, six hundred forty-three thousand, six hundred eighteen".