438970163 has 2 divisors, whose sum is σ = 438970164. Its totient is φ = 438970162.

The previous prime is 438970159. The next prime is 438970171. The reversal of 438970163 is 361079834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438970163 - 2² = 438970159 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 438970163.

It is not a weakly prime, because it can be changed into another prime (438970123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219485081 + 219485082.

It is an arithmetic number, because the mean of its divisors is an integer number (219485082).

Almost surely, 2^438970163 is an apocalyptic number.

438970163 is a deficient number, since it is larger than the sum of its proper divisors (1).

438970163 is an equidigital number, since it uses as much as digits as its factorization.

438970163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 438970163 is about 20951.6148065012. The cubic root of 438970163 is about 759.9966314486.

The spelling of 438970163 in words is "four hundred thirty-eight million, nine hundred seventy thousand, one hundred sixty-three".