438530005865 has 16 divisors (see below), whose sum is σ = 601435037952. Its totient is φ = 300695060544.

The previous prime is 438530005861. The next prime is 438530005871. The reversal of 438530005865 is 568500035834.

It is a cyclic number.

It is not a de Polignac number, because 438530005865 - 2² = 438530005861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438530005861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778412 + ... + 1217778.

It is an arithmetic number, because the mean of its divisors is an integer number (37589689872).

Almost surely, 2^438530005865 is an apocalyptic number.

It is an amenable number.

438530005865 is a deficient number, since it is larger than the sum of its proper divisors (162905032087).

438530005865 is a wasteful number, since it uses less digits than its factorization.

438530005865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467896.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 438530005865 in words is "four hundred thirty-eight billion, five hundred thirty million, five thousand, eight hundred sixty-five".