438129163 has 2 divisors, whose sum is σ = 438129164. Its totient is φ = 438129162.

The previous prime is 438129149. The next prime is 438129179. The reversal of 438129163 is 361921834.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438129163 is a prime.

It is not a weakly prime, because it can be changed into another prime (438129863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219064581 + 219064582.

It is an arithmetic number, because the mean of its divisors is an integer number (219064582).

Almost surely, 2^438129163 is an apocalyptic number.

438129163 is a deficient number, since it is larger than the sum of its proper divisors (1).

438129163 is an equidigital number, since it uses as much as digits as its factorization.

438129163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 438129163 is about 20931.5351324264. The cubic root of 438129163 is about 759.5109752227.

It can be divided in two parts, 43812 and 9163, that added together give a triangular number (52975 = T₃₂₅).

The spelling of 438129163 in words is "four hundred thirty-eight million, one hundred twenty-nine thousand, one hundred sixty-three".