1438481578868 has 12 divisors (see below), whose sum is σ = 2521409556960. Its totient is φ = 718078848312.

The previous prime is 1438481578829. The next prime is 1438481578909. The reversal of 1438481578868 is 8688751848341.

It is a super-2 number, since 2×1438481578868² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (71) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290482496 + ... + 290487447.

It is an arithmetic number, because the mean of its divisors is an integer number (210117463080).

Almost surely, 2^{1438481578868} is an apocalyptic number.

It is an amenable number.

1438481578868 is a deficient number, since it is larger than the sum of its proper divisors (1082927978092).

1438481578868 is a wasteful number, since it uses less digits than its factorization.

1438481578868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580970566 (or 580970564 counting only the distinct ones).

The product of its digits is 330301440, while the sum is 71.

The spelling of 1438481578868 in words is "one trillion, four hundred thirty-eight billion, four hundred eighty-one million, five hundred seventy-eight thousand, eight hundred sixty-eight".