13788940693 has 4 divisors (see below), whose sum is σ = 15042480768. Its totient is φ = 12535400620.

The previous prime is 13788940673. The next prime is 13788940721. The reversal of 13788940693 is 39604988731.

13788940693 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13788940693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13788940673) 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 3 ways as a sum of consecutive naturals, for example, 626770021 + ... + 626770042.

It is an arithmetic number, because the mean of its divisors is an integer number (3760620192).

Almost surely, 2^13788940693 is an apocalyptic number.

It is an amenable number.

13788940693 is a deficient number, since it is larger than the sum of its proper divisors (1253540075).

13788940693 is a wasteful number, since it uses less digits than its factorization.

13788940693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253540074.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 13788940693 in words is "thirteen billion, seven hundred eighty-eight million, nine hundred forty thousand, six hundred ninety-three".