13731744937 has 4 divisors (see below), whose sum is σ = 13742974080. Its totient is φ = 13720515796.

The previous prime is 13731744919. The next prime is 13731744967. The reversal of 13731744937 is 73944713731.

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-13731744937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13731744967) 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, 5612737 + ... + 5615182.

It is an arithmetic number, because the mean of its divisors is an integer number (3435743520).

Almost surely, 2^13731744937 is an apocalyptic number.

It is an amenable number.

13731744937 is a deficient number, since it is larger than the sum of its proper divisors (11229143).

13731744937 is a wasteful number, since it uses less digits than its factorization.

13731744937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11229142.

The product of its digits is 1333584, while the sum is 49.

The spelling of 13731744937 in words is "thirteen billion, seven hundred thirty-one million, seven hundred forty-four thousand, nine hundred thirty-seven".