4118656638 has 16 divisors (see below), whose sum is σ = 8670856320. Its totient is φ = 1300628376.

The previous prime is 4118656613. The next prime is 4118656639. The reversal of 4118656638 is 8366568114.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4118656639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18064170 + ... + 18064397.

It is an arithmetic number, because the mean of its divisors is an integer number (541928520).

Almost surely, 2^4118656638 is an apocalyptic number.

4118656638 is an abundant number, since it is smaller than the sum of its proper divisors (4552199682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4118656638 is a wasteful number, since it uses less digits than its factorization.

4118656638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36128591.

The product of its digits is 829440, while the sum is 48.

The square root of 4118656638 is about 64176.7608874116. The cubic root of 4118656638 is about 1602.9446603579.

The spelling of 4118656638 in words is "four billion, one hundred eighteen million, six hundred fifty-six thousand, six hundred thirty-eight".