4013638281 has 6 divisors (see below), whose sum is σ = 5797477530. Its totient is φ = 2675758848.

The previous prime is 4013638267. The next prime is 4013638327. The reversal of 4013638281 is 1828363104.

4013638281 is a `hidden beast` number, since 4 + 0 + 13 + 638 + 2 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3979591056 + 34047225 = 63084^2 + 5835^2 .

It is not a de Polignac number, because 4013638281 - 2⁵ = 4013638249 is a prime.

It is a super-2 number, since 2×4013638281² = 32218584501417269922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4013638201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222979896 + ... + 222979913.

It is an arithmetic number, because the mean of its divisors is an integer number (966246255).

Almost surely, 2^4013638281 is an apocalyptic number.

It is an amenable number.

4013638281 is a deficient number, since it is larger than the sum of its proper divisors (1783839249).

4013638281 is a wasteful number, since it uses less digits than its factorization.

4013638281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445959815 (or 445959812 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 4013638281 is about 63353.2815330035. The cubic root of 4013638281 is about 1589.2031238876.

The spelling of 4013638281 in words is "four billion, thirteen million, six hundred thirty-eight thousand, two hundred eighty-one".