4243781872 has 40 divisors (see below), whose sum is σ = 8975175552. Its totient is φ = 1927838400.

The previous prime is 4243781869. The next prime is 4243781873. The reversal of 4243781872 is 2781873424.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243781873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333613 + ... + 346099.

Almost surely, 2^4243781872 is an apocalyptic number.

It is an amenable number.

4243781872 is an abundant number, since it is smaller than the sum of its proper divisors (4731393680).

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

4243781872 is a wasteful number, since it uses less digits than its factorization.

4243781872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14437 (or 14431 counting only the distinct ones).

The product of its digits is 602112, while the sum is 46.

The square root of 4243781872 is about 65144.3157305378. The cubic root of 4243781872 is about 1619.0155416915.

The spelling of 4243781872 in words is "four billion, two hundred forty-three million, seven hundred eighty-one thousand, eight hundred seventy-two".