138327863 has 2 divisors, whose sum is σ = 138327864. Its totient is φ = 138327862.

The previous prime is 138327829. The next prime is 138327887. The reversal of 138327863 is 368723831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138327863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138327863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138327803) 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 as a sum of consecutive naturals, namely, 69163931 + 69163932.

It is an arithmetic number, because the mean of its divisors is an integer number (69163932).

Almost surely, 2^138327863 is an apocalyptic number.

138327863 is a deficient number, since it is larger than the sum of its proper divisors (1).

138327863 is an equidigital number, since it uses as much as digits as its factorization.

138327863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 138327863 is about 11761.2866217944. The cubic root of 138327863 is about 517.1738481800.

The spelling of 138327863 in words is "one hundred thirty-eight million, three hundred twenty-seven thousand, eight hundred sixty-three".