478618278 has 8 divisors (see below), whose sum is σ = 957236568. Its totient is φ = 159539424.

The previous prime is 478618271. The next prime is 478618321. The reversal of 478618278 is 872816874.

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

478618278 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 478618278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478618271) by changing a digit.

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, 39884851 + ... + 39884862.

It is an arithmetic number, because the mean of its divisors is an integer number (119654571).

Almost surely, 2^478618278 is an apocalyptic number.

478618278 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.

478618278 is a wasteful number, since it uses less digits than its factorization.

478618278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79769718.

The product of its digits is 1204224, while the sum is 51.

The square root of 478618278 is about 21877.3462284620. The cubic root of 478618278 is about 782.2215202609.

The spelling of 478618278 in words is "four hundred seventy-eight million, six hundred eighteen thousand, two hundred seventy-eight".