438171398311936 has 39 divisors (see below), whose sum is σ = 876238500231583. Its totient is φ = 219085029314560.

The previous prime is 438171398311919. The next prime is 438171398311963. The reversal of 438171398311936 is 639113893171834.

The square root of 438171398311936 is 20932544.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1339519281 + ... + 1339846351.

Almost surely, 2^{438171398311936} is an apocalyptic number.

438171398311936 is the 20932544-th square number.

It is an amenable number.

438171398311936 is a deficient number, since it is larger than the sum of its proper divisors (438067101919647).

438171398311936 is an frugal number, since it uses more digits than its factorization.

438171398311936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654166 (or 327073 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 67.

The spelling of 438171398311936 in words is "four hundred thirty-eight trillion, one hundred seventy-one billion, three hundred ninety-eight million, three hundred eleven thousand, nine hundred thirty-six".