13923136187 has 4 divisors (see below), whose sum is σ = 14742144216. Its totient is φ = 13104128160.

The previous prime is 13923136169. The next prime is 13923136193. The reversal of 13923136187 is 78163132931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13923136187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13923139187) 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, 409503989 + ... + 409504022.

It is an arithmetic number, because the mean of its divisors is an integer number (3685536054).

Almost surely, 2^13923136187 is an apocalyptic number.

13923136187 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13923136187 is a deficient number, since it is larger than the sum of its proper divisors (819008029).

13923136187 is an equidigital number, since it uses as much as digits as its factorization.

13923136187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819008028.

The product of its digits is 163296, while the sum is 44.

The spelling of 13923136187 in words is "thirteen billion, nine hundred twenty-three million, one hundred thirty-six thousand, one hundred eighty-seven".