1378869355438 has 8 divisors (see below), whose sum is σ = 2070306266688. Its totient is φ = 688767266544.

The previous prime is 1378869355427. The next prime is 1378869355439. The reversal of 1378869355438 is 8345539688731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378869355439) 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, 333703006 + ... + 333707137.

It is an arithmetic number, because the mean of its divisors is an integer number (258788283336).

Almost surely, 2^{1378869355438} is an apocalyptic number.

1378869355438 is a deficient number, since it is larger than the sum of its proper divisors (691436911250).

1378869355438 is a wasteful number, since it uses less digits than its factorization.

1378869355438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667411178.

The product of its digits is 522547200, while the sum is 70.

The spelling of 1378869355438 in words is "one trillion, three hundred seventy-eight billion, eight hundred sixty-nine million, three hundred fifty-five thousand, four hundred thirty-eight".