4143661218 has 16 divisors (see below), whose sum is σ = 9208136160. Its totient is φ = 1381220388.

The previous prime is 4143661177. The next prime is 4143661237. The reversal of 4143661218 is 8121663414.

4143661218 is a `hidden beast` number, since 4 + 1 + 4 + 36 + 612 + 1 + 8 = 666.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38367180 + ... + 38367287.

It is an arithmetic number, because the mean of its divisors is an integer number (575508510).

Almost surely, 2^4143661218 is an apocalyptic number.

4143661218 is an abundant number, since it is smaller than the sum of its proper divisors (5064474942).

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

4143661218 is a wasteful number, since it uses less digits than its factorization.

4143661218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76734478 (or 76734472 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 4143661218 is about 64371.2763427913. The cubic root of 4143661218 is about 1606.1819715157.

The spelling of 4143661218 in words is "four billion, one hundred forty-three million, six hundred sixty-one thousand, two hundred eighteen".