1385653638839 has 8 divisors (see below), whose sum is σ = 1428241306368. Its totient is φ = 1343336369760.

The previous prime is 1385653638821. The next prime is 1385653638851. The reversal of 1385653638839 is 9388363565831.

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 1385653638839 - 2²⁸ = 1385385203383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385653628839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67589207 + ... + 67609704.

It is an arithmetic number, because the mean of its divisors is an integer number (178530163296).

Almost surely, 2^{1385653638839} is an apocalyptic number.

1385653638839 is a deficient number, since it is larger than the sum of its proper divisors (42587667529).

1385653638839 is a wasteful number, since it uses less digits than its factorization.

1385653638839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135199225.

The product of its digits is 335923200, while the sum is 68.

The spelling of 1385653638839 in words is "one trillion, three hundred eighty-five billion, six hundred fifty-three million, six hundred thirty-eight thousand, eight hundred thirty-nine".