13689538531 has 4 divisors (see below), whose sum is σ = 13699554192. Its totient is φ = 13679522872.

The previous prime is 13689538493. The next prime is 13689538547. The reversal of 13689538531 is 13583598631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13583598631 = 31 ⋅438180601.

It is a cyclic number.

It is not a de Polignac number, because 13689538531 - 2¹³ = 13689530339 is a prime.

It is a super-2 number, since 2×13689538531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13689538561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5005780 + ... + 5008513.

It is an arithmetic number, because the mean of its divisors is an integer number (3424888548).

Almost surely, 2^13689538531 is an apocalyptic number.

13689538531 is a deficient number, since it is larger than the sum of its proper divisors (10015661).

13689538531 is a wasteful number, since it uses less digits than its factorization.

13689538531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10015660.

The product of its digits is 2332800, while the sum is 52.

The spelling of 13689538531 in words is "thirteen billion, six hundred eighty-nine million, five hundred thirty-eight thousand, five hundred thirty-one".