1938615808773 has 16 divisors (see below), whose sum is σ = 2965313488896. Its totient is φ = 1103568366000.

The previous prime is 1938615808763. The next prime is 1938615808813. The reversal of 1938615808773 is 3778085168391.

It is not a de Polignac number, because 1938615808773 - 2⁵ = 1938615808741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938615808763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175498353 + ... + 175509398.

It is an arithmetic number, because the mean of its divisors is an integer number (185332093056).

Almost surely, 2^{1938615808773} is an apocalyptic number.

It is an amenable number.

1938615808773 is a deficient number, since it is larger than the sum of its proper divisors (1026697680123).

1938615808773 is a wasteful number, since it uses less digits than its factorization.

1938615808773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351008024.

The product of its (nonzero) digits is 60963840, while the sum is 66.

The spelling of 1938615808773 in words is "one trillion, nine hundred thirty-eight billion, six hundred fifteen million, eight hundred eight thousand, seven hundred seventy-three".