4478018 has 4 divisors (see below), whose sum is σ = 6717030. Its totient is φ = 2239008.

The previous prime is 4478017. The next prime is 4478059. The reversal of 4478018 is 8108744.

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

It can be written as a sum of positive squares in only one way, i.e., 4338889 + 139129 = 2083^2 + 373^2 .

It is not an unprimeable number, because it can be changed into a prime (4478011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119503 + ... + 1119506.

Almost surely, 2^4478018 is an apocalyptic number.

4478018 is a deficient number, since it is larger than the sum of its proper divisors (2239012).

4478018 is a wasteful number, since it uses less digits than its factorization.

4478018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239011.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 4478018 is about 2116.1327935647. The cubic root of 4478018 is about 164.8270977294.

The spelling of 4478018 in words is "four million, four hundred seventy-eight thousand, eighteen".