1689202045439 has 8 divisors (see below), whose sum is σ = 1775326519680. Its totient is φ = 1604134313496.

The previous prime is 1689202045387. The next prime is 1689202045483. The reversal of 1689202045439 is 9345402029861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1689202045439 - 2²⁰ = 1689200996863 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 (1689202645439) 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, 264182297 + ... + 264188690.

It is an arithmetic number, because the mean of its divisors is an integer number (221915814960).

Almost surely, 2^{1689202045439} is an apocalyptic number.

1689202045439 is a deficient number, since it is larger than the sum of its proper divisors (86124474241).

1689202045439 is a wasteful number, since it uses less digits than its factorization.

1689202045439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528371149.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 1689202045439 in words is "one trillion, six hundred eighty-nine billion, two hundred two million, forty-five thousand, four hundred thirty-nine".