1689338853802 has 16 divisors (see below), whose sum is σ = 2543179898952. Its totient is φ = 841612584960.

The previous prime is 1689338853791. The next prime is 1689338853863. The reversal of 1689338853802 is 2083588339861.

It can be written as a sum of positive squares in 4 ways, for example, as 1477491301441 + 211847552361 = 1215521^2 + 460269^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10257418 + ... + 10420810.

Almost surely, 2^{1689338853802} is an apocalyptic number.

1689338853802 is a deficient number, since it is larger than the sum of its proper divisors (853841045150).

1689338853802 is a wasteful number, since it uses less digits than its factorization.

1689338853802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182073.

The product of its (nonzero) digits is 59719680, while the sum is 64.

The spelling of 1689338853802 in words is "one trillion, six hundred eighty-nine billion, three hundred thirty-eight million, eight hundred fifty-three thousand, eight hundred two".