4781618 has 4 divisors (see below), whose sum is σ = 7172430. Its totient is φ = 2390808.

The previous prime is 4781611. The next prime is 4781629. The reversal of 4781618 is 8161874.

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., 4765489 + 16129 = 2183^2 + 127^2 .

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4781611) by changing a digit.

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 as a sum of consecutive naturals, namely, 1195403 + ... + 1195406.

Almost surely, 2^4781618 is an apocalyptic number.

4781618 is a deficient number, since it is larger than the sum of its proper divisors (2390812).

4781618 is a wasteful number, since it uses less digits than its factorization.

4781618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390811.

The product of its digits is 10752, while the sum is 35.

The square root of 4781618 is about 2186.6911075870. The cubic root of 4781618 is about 168.4709245502.

The spelling of 4781618 in words is "four million, seven hundred eighty-one thousand, six hundred eighteen".