438519112309 has 2 divisors, whose sum is σ = 438519112310. Its totient is φ = 438519112308.

The previous prime is 438519112307. The next prime is 438519112331. The reversal of 438519112309 is 903211915834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281088711684 + 157430400625 = 530178^2 + 396775^2 .

It is a cyclic number.

It is not a de Polignac number, because 438519112309 - 2¹ = 438519112307 is a prime.

It is a super-2 number, since 2×438519112309² (a number of 24 digits) contains 22 as substring.

Together with 438519112307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438519112307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219259556154 + 219259556155.

It is an arithmetic number, because the mean of its divisors is an integer number (219259556155).

Almost surely, 2^438519112309 is an apocalyptic number.

It is an amenable number.

438519112309 is a deficient number, since it is larger than the sum of its proper divisors (1).

438519112309 is an equidigital number, since it uses as much as digits as its factorization.

438519112309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 438519112309 in words is "four hundred thirty-eight billion, five hundred nineteen million, one hundred twelve thousand, three hundred nine".