18969678863 has 2 divisors, whose sum is σ = 18969678864. Its totient is φ = 18969678862.

The previous prime is 18969678841. The next prime is 18969678901. The reversal of 18969678863 is 36887696981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18969678863 - 2³⁰ = 17895937039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18969678823) 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, 9484839431 + 9484839432.

It is an arithmetic number, because the mean of its divisors is an integer number (9484839432).

Almost surely, 2^18969678863 is an apocalyptic number.

18969678863 is a deficient number, since it is larger than the sum of its proper divisors (1).

18969678863 is an equidigital number, since it uses as much as digits as its factorization.

18969678863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188116992, while the sum is 71.

The spelling of 18969678863 in words is "eighteen billion, nine hundred sixty-nine million, six hundred seventy-eight thousand, eight hundred sixty-three".