438758310649 has 4 divisors (see below), whose sum is σ = 448961992336. Its totient is φ = 428554628964.

The previous prime is 438758310631. The next prime is 438758310763. The reversal of 438758310649 is 946013857834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438758310649 - 2²⁹ = 438221439737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 438758310593 and 438758310602.

It is not an unprimeable number, because it can be changed into a prime (438758110649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101840779 + ... + 5101840864.

It is an arithmetic number, because the mean of its divisors is an integer number (112240498084).

Almost surely, 2^438758310649 is an apocalyptic number.

It is an amenable number.

438758310649 is a deficient number, since it is larger than the sum of its proper divisors (10203681687).

438758310649 is a wasteful number, since it uses less digits than its factorization.

438758310649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10203681686.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 438758310649 in words is "four hundred thirty-eight billion, seven hundred fifty-eight million, three hundred ten thousand, six hundred forty-nine".