478511538 has 16 divisors (see below), whose sum is σ = 966499776. Its totient is φ = 157924400.

The previous prime is 478511503. The next prime is 478511543. The reversal of 478511538 is 835115874.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 478511538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394206 + ... + 395417.

It is an arithmetic number, because the mean of its divisors is an integer number (60406236).

Almost surely, 2^478511538 is an apocalyptic number.

478511538 is an abundant number, since it is smaller than the sum of its proper divisors (487988238).

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

478511538 is a wasteful number, since it uses less digits than its factorization.

478511538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789729.

The product of its digits is 134400, while the sum is 42.

The square root of 478511538 is about 21874.9065826577. The cubic root of 478511538 is about 782.1633663788.

The spelling of 478511538 in words is "four hundred seventy-eight million, five hundred eleven thousand, five hundred thirty-eight".