1384388203873 has 4 divisors (see below), whose sum is σ = 1384541200900. Its totient is φ = 1384235206848.

The previous prime is 1384388203829. The next prime is 1384388203889. The reversal of 1384388203873 is 3783028834831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 716142447504 + 668245756369 = 846252^2 + 817463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1384388203873 - 2³⁷ = 1246949250401 is a prime.

It is a super-2 number, since 2×1384388203873² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1384388203823) 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, 76484940 + ... + 76503037.

It is an arithmetic number, because the mean of its divisors is an integer number (346135300225).

Almost surely, 2^{1384388203873} is an apocalyptic number.

It is an amenable number.

1384388203873 is a deficient number, since it is larger than the sum of its proper divisors (152997027).

1384388203873 is an equidigital number, since it uses as much as digits as its factorization.

1384388203873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152997026.

The product of its (nonzero) digits is 18579456, while the sum is 58.

The spelling of 1384388203873 in words is "one trillion, three hundred eighty-four billion, three hundred eighty-eight million, two hundred three thousand, eight hundred seventy-three".