13862943081 has 27 divisors (see below), whose sum is σ = 21690249399. Its totient is φ = 8528216112.

The previous prime is 13862943079. The next prime is 13862943091. The reversal of 13862943081 is 18034926831.

The square root of 13862943081 is 117741.

It is a perfect power (a square), and thus also a powerful number.

13862943081 is a `hidden beast` number, since 13 + 8 + 629 + 4 + 3 + 0 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2050731225 + 11812211856 = 45285^2 + 108684^2 .

It is not a de Polignac number, because 13862943081 - 2¹ = 13862943079 is a prime.

It is a super-2 number, since 2×13862943081² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13862943071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4590390 + ... + 4593408.

Almost surely, 2^13862943081 is an apocalyptic number.

13862943081 is the 117741-st square number.

13862943081 is the 58871-st centered octagonal number.

It is an amenable number.

13862943081 is a deficient number, since it is larger than the sum of its proper divisors (7827306318).

13862943081 is an frugal number, since it uses more digits than its factorization.

13862943081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 13862943081 in words is "thirteen billion, eight hundred sixty-two million, nine hundred forty-three thousand, eighty-one".