478646161 has 12 divisors (see below), whose sum is σ = 557320692. Its totient is φ = 409879008.

The previous prime is 478646149. The next prime is 478646197. The reversal of 478646161 is 161646874.

It can be written as a sum of positive squares in 2 ways, for example, as 170433025 + 308213136 = 13055^2 + 17556^2 .

It is not a de Polignac number, because 478646161 - 2²¹ = 476549009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478646111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55411 + ... + 63463.

It is an arithmetic number, because the mean of its divisors is an integer number (46443391).

Almost surely, 2^478646161 is an apocalyptic number.

It is an amenable number.

478646161 is a deficient number, since it is larger than the sum of its proper divisors (78674531).

478646161 is a wasteful number, since it uses less digits than its factorization.

478646161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9280 (or 9273 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 478646161 is about 21877.9834765455. The cubic root of 478646161 is about 782.2367099991.

The spelling of 478646161 in words is "four hundred seventy-eight million, six hundred forty-six thousand, one hundred sixty-one".