4218878136 has 128 divisors (see below), whose sum is σ = 11675980800. Its totient is φ = 1259712000.

The previous prime is 4218878129. The next prime is 4218878137. The reversal of 4218878136 is 6318788124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4218878137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7798026 + ... + 7798566.

It is an arithmetic number, because the mean of its divisors is an integer number (91218600).

Almost surely, 2^4218878136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4218878136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5837990400).

4218878136 is an abundant number, since it is smaller than the sum of its proper divisors (7457102664).

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

4218878136 is a wasteful number, since it uses less digits than its factorization.

4218878136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 937 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 4218878136 is about 64952.8916677310. The cubic root of 4218878136 is about 1615.8423765075.

The spelling of 4218878136 in words is "four billion, two hundred eighteen million, eight hundred seventy-eight thousand, one hundred thirty-six".