13118639 has 2 divisors, whose sum is σ = 13118640. Its totient is φ = 13118638.

The previous prime is 13118629. The next prime is 13118641. The reversal of 13118639 is 93681131.

13118639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (93681131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13118639 - 2⁸ = 13118383 is a prime.

Together with 13118641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13118629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6559319 + 6559320.

It is an arithmetic number, because the mean of its divisors is an integer number (6559320).

Almost surely, 2^13118639 is an apocalyptic number.

13118639 is a deficient number, since it is larger than the sum of its proper divisors (1).

13118639 is an equidigital number, since it uses as much as digits as its factorization.

13118639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 13118639 is about 3621.9661787488. The cubic root of 13118639 is about 235.8465858721.

The spelling of 13118639 in words is "thirteen million, one hundred eighteen thousand, six hundred thirty-nine".