1689687673293 has 8 divisors (see below), whose sum is σ = 2253587222656. Its totient is φ = 1126123286400.

The previous prime is 1689687673277. The next prime is 1689687673309. The reversal of 1689687673293 is 3923767869861.

It is an interprime number because it is at equal distance from previous prime (1689687673277) and next prime (1689687673309).

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

It is not a de Polignac number, because 1689687673293 - 2⁴ = 1689687673277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689687672293) 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, 83778853 + ... + 83799018.

It is an arithmetic number, because the mean of its divisors is an integer number (281698402832).

Almost surely, 2^{1689687673293} is an apocalyptic number.

It is an amenable number.

1689687673293 is a deficient number, since it is larger than the sum of its proper divisors (563899549363).

1689687673293 is a wasteful number, since it uses less digits than its factorization.

1689687673293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167581235.

The product of its digits is 987614208, while the sum is 75.

The spelling of 1689687673293 in words is "one trillion, six hundred eighty-nine billion, six hundred eighty-seven million, six hundred seventy-three thousand, two hundred ninety-three".