1383755803729 has 8 divisors (see below), whose sum is σ = 1490744256512. Its totient is φ = 1276845307920.

The previous prime is 1383755803711. The next prime is 1383755803849. The reversal of 1383755803729 is 9273085573831.

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

It is not a de Polignac number, because 1383755803729 - 2⁷ = 1383755803601 is a prime.

It is a super-3 number, since 3×1383755803729³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383755800729) 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, 19452369 + ... + 19523374.

It is an arithmetic number, because the mean of its divisors is an integer number (186343032064).

Almost surely, 2^{1383755803729} is an apocalyptic number.

It is an amenable number.

1383755803729 is a deficient number, since it is larger than the sum of its proper divisors (106988452783).

1383755803729 is a wasteful number, since it uses less digits than its factorization.

1383755803729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38978487.

The product of its (nonzero) digits is 38102400, while the sum is 61.

The spelling of 1383755803729 in words is "one trillion, three hundred eighty-three billion, seven hundred fifty-five million, eight hundred three thousand, seven hundred twenty-nine".