1689814374791 has 8 divisors (see below), whose sum is σ = 1731086170800. Its totient is φ = 1648545284160.

The previous prime is 1689814374769. The next prime is 1689814374793. The reversal of 1689814374791 is 1974734189861.

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 1689814374791 - 2⁶ = 1689814374727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689814374793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618020 + ... + 1939478.

It is an arithmetic number, because the mean of its divisors is an integer number (216385771350).

Almost surely, 2^{1689814374791} is an apocalyptic number.

1689814374791 is a deficient number, since it is larger than the sum of its proper divisors (41271796009).

1689814374791 is a wasteful number, since it uses less digits than its factorization.

1689814374791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352689.

The product of its digits is 73156608, while the sum is 68.

The spelling of 1689814374791 in words is "one trillion, six hundred eighty-nine billion, eight hundred fourteen million, three hundred seventy-four thousand, seven hundred ninety-one".