438808219169 has 2 divisors, whose sum is σ = 438808219170. Its totient is φ = 438808219168.

The previous prime is 438808219123. The next prime is 438808219229. The reversal of 438808219169 is 961912808834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380273255569 + 58534963600 = 616663^2 + 241940^2 .

It is a cyclic number.

It is not a de Polignac number, because 438808219169 - 2²⁴ = 438791441953 is a prime.

It is a super-2 number, since 2×438808219169² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (438808215169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219404109584 + 219404109585.

It is an arithmetic number, because the mean of its divisors is an integer number (219404109585).

Almost surely, 2^438808219169 is an apocalyptic number.

It is an amenable number.

438808219169 is a deficient number, since it is larger than the sum of its proper divisors (1).

438808219169 is an equidigital number, since it uses as much as digits as its factorization.

438808219169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 59.

The spelling of 438808219169 in words is "four hundred thirty-eight billion, eight hundred eight million, two hundred nineteen thousand, one hundred sixty-nine".