1338401686415 has 8 divisors (see below), whose sum is σ = 1606088923920. Its totient is φ = 1070716748992.

The previous prime is 1338401686397. The next prime is 1338401686441. The reversal of 1338401686415 is 5146861048331.

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

It is a cyclic number.

It is not a de Polignac number, because 1338401686415 - 2¹⁰ = 1338401685391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207472 + ... + 2033418.

It is an arithmetic number, because the mean of its divisors is an integer number (200761115490).

Almost surely, 2^{1338401686415} is an apocalyptic number.

1338401686415 is a deficient number, since it is larger than the sum of its proper divisors (267687237505).

1338401686415 is an equidigital number, since it uses as much as digits as its factorization.

1338401686415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150041.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 1338401686415 in words is "one trillion, three hundred thirty-eight billion, four hundred one million, six hundred eighty-six thousand, four hundred fifteen".