3838840281 has 24 divisors (see below), whose sum is σ = 5617652040. Its totient is φ = 2525838336.

The previous prime is 3838840279. The next prime is 3838840301. The reversal of 3838840281 is 1820488383.

3838840281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25160256 + 3813680025 = 5016^2 + 61755^2 .

It is not a de Polignac number, because 3838840281 - 2¹ = 3838840279 is a prime.

It is a super-2 number, since 2×3838840281² = 29473389406056317922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3838842281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319735 + ... + 331523.

It is an arithmetic number, because the mean of its divisors is an integer number (234068835).

Almost surely, 2^3838840281 is an apocalyptic number.

It is an amenable number.

3838840281 is a deficient number, since it is larger than the sum of its proper divisors (1778811759).

3838840281 is a wasteful number, since it uses less digits than its factorization.

3838840281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12265 (or 12262 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 3838840281 is about 61958.3753902570. The cubic root of 3838840281 is about 1565.7893966231.

The spelling of 3838840281 in words is "three billion, eight hundred thirty-eight million, eight hundred forty thousand, two hundred eighty-one".