1693673938885 has 8 divisors (see below), whose sum is σ = 2041283875320. Its totient is φ = 1349022385344.

The previous prime is 1693673938861. The next prime is 1693673938933. The reversal of 1693673938885 is 5888393763961.

It can be written as a sum of positive squares in 4 ways, for example, as 984091776196 + 709582162689 = 992014^2 + 842367^2 .

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 1693673938885 - 2⁹ = 1693673938373 is a prime.

It is a super-2 number, since 2×1693673938885² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739594462 + ... + 739596751.

It is an arithmetic number, because the mean of its divisors is an integer number (255160484415).

Almost surely, 2^{1693673938885} is an apocalyptic number.

It is an amenable number.

1693673938885 is a deficient number, since it is larger than the sum of its proper divisors (347609936435).

1693673938885 is a wasteful number, since it uses less digits than its factorization.

1693673938885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479191447.

The product of its digits is 1410877440, while the sum is 76.

The spelling of 1693673938885 in words is "one trillion, six hundred ninety-three billion, six hundred seventy-three million, nine hundred thirty-eight thousand, eight hundred eighty-five".