13871863 has 2 divisors, whose sum is σ = 13871864. Its totient is φ = 13871862.

The previous prime is 13871861. The next prime is 13871927. The reversal of 13871863 is 36817831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13871863 - 2¹ = 13871861 is a prime.

Together with 13871861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13871861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935931 + 6935932.

It is an arithmetic number, because the mean of its divisors is an integer number (6935932).

Almost surely, 2^13871863 is an apocalyptic number.

13871863 is a deficient number, since it is larger than the sum of its proper divisors (1).

13871863 is an equidigital number, since it uses as much as digits as its factorization.

13871863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 13871863 is about 3724.4949993254. The cubic root of 13871863 is about 240.2766658977.

The spelling of 13871863 in words is "thirteen million, eight hundred seventy-one thousand, eight hundred sixty-three".