4218944940 has 240 divisors, whose sum is σ = 15648494400. Its totient is φ = 931004928.

The previous prime is 4218944923. The next prime is 4218944941. The reversal of 4218944940 is 494498124.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (4218944941) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 322446 + ... + 335274.

It is an arithmetic number, because the mean of its divisors is an integer number (65202060).

Almost surely, 2^4218944940 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 4218944940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7824247200).

4218944940 is an abundant number, since it is smaller than the sum of its proper divisors (11429549460).

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

4218944940 is a wasteful number, since it uses less digits than its factorization.

4218944940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12886 (or 12875 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 4218944940 is about 64953.4059153175. The cubic root of 4218944940 is about 1615.8509051701.

The spelling of 4218944940 in words is "four billion, two hundred eighteen million, nine hundred forty-four thousand, nine hundred forty".