478161265 has 4 divisors (see below), whose sum is σ = 573793524. Its totient is φ = 382529008.

The previous prime is 478161259. The next prime is 478161287. The reversal of 478161265 is 562161874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 243734544 + 234426721 = 15612^2 + 15311^2 .

It is a cyclic number.

It is not a de Polignac number, because 478161265 - 2⁷ = 478161137 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47816122 + ... + 47816131.

It is an arithmetic number, because the mean of its divisors is an integer number (143448381).

Almost surely, 2^478161265 is an apocalyptic number.

It is an amenable number.

478161265 is a deficient number, since it is larger than the sum of its proper divisors (95632259).

478161265 is an equidigital number, since it uses as much as digits as its factorization.

478161265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95632258.

The product of its digits is 80640, while the sum is 40.

The square root of 478161265 is about 21866.8988427715. The cubic root of 478161265 is about 781.9724705392.

The spelling of 478161265 in words is "four hundred seventy-eight million, one hundred sixty-one thousand, two hundred sixty-five".