4013011081 has 4 divisors (see below), whose sum is σ = 4013195332. Its totient is φ = 4012826832.

The previous prime is 4013011069. The next prime is 4013011091. The reversal of 4013011081 is 1801103104.

4013011081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2836521081 + 1176490000 = 53259^2 + 34300^2 .

It is a cyclic number.

It is not a de Polignac number, because 4013011081 - 2²⁷ = 3878793353 is a prime.

It is a super-3 number, since 3×4013011081³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4013011001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54270 + ... + 104743.

It is an arithmetic number, because the mean of its divisors is an integer number (1003298833).

Almost surely, 2^4013011081 is an apocalyptic number.

It is an amenable number.

4013011081 is a deficient number, since it is larger than the sum of its proper divisors (184251).

4013011081 is a wasteful number, since it uses less digits than its factorization.

4013011081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184250.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 4013011081 is about 63348.3313197751. The cubic root of 4013011081 is about 1589.1203394700.

Adding to 4013011081 its reverse (1801103104), we get a palindrome (5814114185).

The spelling of 4013011081 in words is "four billion, thirteen million, eleven thousand, eighty-one".