129918163 has 2 divisors, whose sum is σ = 129918164. Its totient is φ = 129918162.

The previous prime is 129918161. The next prime is 129918169. The reversal of 129918163 is 361819921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129918163 - 2¹ = 129918161 is a prime.

Together with 129918161, it forms a pair of twin primes.

It is equal to p_7373839 and since 129918163 and 7373839 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (129918161) 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, 64959081 + 64959082.

It is an arithmetic number, because the mean of its divisors is an integer number (64959082).

Almost surely, 2^129918163 is an apocalyptic number.

129918163 is a deficient number, since it is larger than the sum of its proper divisors (1).

129918163 is an equidigital number, since it uses as much as digits as its factorization.

129918163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 40.

The square root of 129918163 is about 11398.1648961576. The cubic root of 129918163 is about 506.4733796912.

The spelling of 129918163 in words is "one hundred twenty-nine million, nine hundred eighteen thousand, one hundred sixty-three".