4228143781 has 8 divisors (see below), whose sum is σ = 4248730584. Its totient is φ = 4207603200.

The previous prime is 4228143779. The next prime is 4228143811. The reversal of 4228143781 is 1873418224.

It can be written as a sum of positive squares in 4 ways, for example, as 1289528100 + 2938615681 = 35910^2 + 54209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4228143781 - 2¹ = 4228143779 is a prime.

It is a super-2 number, since 2×4228143781² = 35754399665617951922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4228143761) 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, 179421 + ... + 201613.

It is an arithmetic number, because the mean of its divisors is an integer number (531091323).

Almost surely, 2^4228143781 is an apocalyptic number.

It is an amenable number.

4228143781 is a deficient number, since it is larger than the sum of its proper divisors (20586803).

4228143781 is a wasteful number, since it uses less digits than its factorization.

4228143781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23111.

The product of its digits is 86016, while the sum is 40.

The square root of 4228143781 is about 65024.1784338718. The cubic root of 4228143781 is about 1617.0244344042.

The spelling of 4228143781 in words is "four billion, two hundred twenty-eight million, one hundred forty-three thousand, seven hundred eighty-one".