13818863 has 2 divisors, whose sum is σ = 13818864. Its totient is φ = 13818862.

The previous prime is 13818853. The next prime is 13818869. The reversal of 13818863 is 36881831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13818863 - 2²⁰ = 12770287 is a prime.

It is a super-2 number, since 2×13818863² = 381921949225538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13818869) 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, 6909431 + 6909432.

It is an arithmetic number, because the mean of its divisors is an integer number (6909432).

Almost surely, 2^13818863 is an apocalyptic number.

13818863 is a deficient number, since it is larger than the sum of its proper divisors (1).

13818863 is an equidigital number, since it uses as much as digits as its factorization.

13818863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 38.

The square root of 13818863 is about 3717.3731316617. The cubic root of 13818863 is about 239.9702683077.

The spelling of 13818863 in words is "thirteen million, eight hundred eighteen thousand, eight hundred sixty-three".