478678161 has 32 divisors (see below), whose sum is σ = 712535040. Its totient is φ = 283852800.

The previous prime is 478678159. The next prime is 478678199. The reversal of 478678161 is 161876874.

It is not a de Polignac number, because 478678161 - 2¹ = 478678159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478678161.

It is not an unprimeable number, because it can be changed into a prime (478678121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339025 + ... + 340433.

It is an arithmetic number, because the mean of its divisors is an integer number (22266720).

Almost surely, 2^478678161 is an apocalyptic number.

It is an amenable number.

478678161 is a deficient number, since it is larger than the sum of its proper divisors (233856879).

478678161 is a wasteful number, since it uses less digits than its factorization.

478678161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737.

The product of its digits is 451584, while the sum is 48.

The square root of 478678161 is about 21878.7147931500. The cubic root of 478678161 is about 782.2541418162.

The spelling of 478678161 in words is "four hundred seventy-eight million, six hundred seventy-eight thousand, one hundred sixty-one".