1689809189941 has 8 divisors (see below), whose sum is σ = 1690849532160. Its totient is φ = 1688768975712.

The previous prime is 1689809189927. The next prime is 1689809189947. The reversal of 1689809189941 is 1499819089861.

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 1689809189941 - 2¹⁷ = 1689809058869 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 (1689809189947) 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, 45208126 + ... + 45245488.

It is an arithmetic number, because the mean of its divisors is an integer number (211356191520).

Almost surely, 2^{1689809189941} is an apocalyptic number.

It is an amenable number.

1689809189941 is a deficient number, since it is larger than the sum of its proper divisors (1040342219).

1689809189941 is a wasteful number, since it uses less digits than its factorization.

1689809189941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63995.

The product of its (nonzero) digits is 80621568, while the sum is 73.

The spelling of 1689809189941 in words is "one trillion, six hundred eighty-nine billion, eight hundred nine million, one hundred eighty-nine thousand, nine hundred forty-one".