4218077844 has 18 divisors (see below), whose sum is σ = 10662363530. Its totient is φ = 1406025936.

The previous prime is 4218077833. The next prime is 4218077849. The reversal of 4218077844 is 4487708124.

4218077844 is a `hidden beast` number, since 421 + 80 + 77 + 84 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4195152900 + 22924944 = 64770^2 + 4788^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 4218077844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4218077849) 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 in 5 ways as a sum of consecutive naturals, for example, 58584379 + ... + 58584450.

Almost surely, 2^4218077844 is an apocalyptic number.

It is an amenable number.

4218077844 is an abundant number, since it is smaller than the sum of its proper divisors (6444285686).

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

4218077844 is a wasteful number, since it uses less digits than its factorization.

4218077844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117168839 (or 117168834 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 45.

The square root of 4218077844 is about 64946.7308184176. The cubic root of 4218077844 is about 1615.7401986725.

The spelling of 4218077844 in words is "four billion, two hundred eighteen million, seventy-seven thousand, eight hundred forty-four".