478118881 has 2 divisors, whose sum is σ = 478118882. Its totient is φ = 478118880.

The previous prime is 478118873. The next prime is 478118887. The reversal of 478118881 is 188811874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274200481 + 203918400 = 16559^2 + 14280^2 .

It is a cyclic number.

It is not a de Polignac number, because 478118881 - 2³ = 478118873 is a prime.

It is a super-2 number, since 2×478118881² = 457195328737384322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (478118887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239059440 + 239059441.

It is an arithmetic number, because the mean of its divisors is an integer number (239059441).

Almost surely, 2^478118881 is an apocalyptic number.

It is an amenable number.

478118881 is a deficient number, since it is larger than the sum of its proper divisors (1).

478118881 is an equidigital number, since it uses as much as digits as its factorization.

478118881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 114688, while the sum is 46.

The square root of 478118881 is about 21865.9296852432. The cubic root of 478118881 is about 781.9493652935.

The spelling of 478118881 in words is "four hundred seventy-eight million, one hundred eighteen thousand, eight hundred eighty-one".