1689237244799 has 4 divisors (see below), whose sum is σ = 1819178571336. Its totient is φ = 1559295918264.

The previous prime is 1689237244759. The next prime is 1689237244811. The reversal of 1689237244799 is 9974427329861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1689237244799 - 2²⁰ = 1689236196223 is a prime.

It is a super-2 number, since 2×1689237244799² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689237244759) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 64970663249 + ... + 64970663274.

It is an arithmetic number, because the mean of its divisors is an integer number (454794642834).

Almost surely, 2^{1689237244799} is an apocalyptic number.

1689237244799 is a deficient number, since it is larger than the sum of its proper divisors (129941326537).

1689237244799 is a wasteful number, since it uses less digits than its factorization.

1689237244799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129941326536.

The product of its digits is 329204736, while the sum is 71.

The spelling of 1689237244799 in words is "one trillion, six hundred eighty-nine billion, two hundred thirty-seven million, two hundred forty-four thousand, seven hundred ninety-nine".