1938693618892 has 6 divisors (see below), whose sum is σ = 3392713833068. Its totient is φ = 969346809444.

The previous prime is 1938693618877. The next prime is 1938693618893. The reversal of 1938693618892 is 2988163968391.

It is not an unprimeable number, because it can be changed into a prime (1938693618893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242336702358 + ... + 242336702365.

Almost surely, 2^{1938693618892} is an apocalyptic number.

It is an amenable number.

1938693618892 is a deficient number, since it is larger than the sum of its proper divisors (1454020214176).

1938693618892 is a wasteful number, since it uses less digits than its factorization.

1938693618892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484673404727 (or 484673404725 counting only the distinct ones).

The product of its digits is 241864704, while the sum is 73.

The spelling of 1938693618892 in words is "one trillion, nine hundred thirty-eight billion, six hundred ninety-three million, six hundred eighteen thousand, eight hundred ninety-two".