438739173916 has 6 divisors (see below), whose sum is σ = 767793554360. Its totient is φ = 219369586956.

The previous prime is 438739173809. The next prime is 438739173923. The reversal of 438739173916 is 619371937834.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54842396736 + ... + 54842396743.

Almost surely, 2^438739173916 is an apocalyptic number.

It is an amenable number.

438739173916 is a deficient number, since it is larger than the sum of its proper divisors (329054380444).

438739173916 is a wasteful number, since it uses less digits than its factorization.

438739173916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109684793483 (or 109684793481 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 61.

The spelling of 438739173916 in words is "four hundred thirty-eight billion, seven hundred thirty-nine million, one hundred seventy-three thousand, nine hundred sixteen".