1683965116789 has 8 divisors (see below), whose sum is σ = 1759024855872. Its totient is φ = 1609059033120.

The previous prime is 1683965116747. The next prime is 1683965116793. The reversal of 1683965116789 is 9876115693861.

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 1683965116789 - 2²⁷ = 1683830899061 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 (1683965116709) 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, 38391447 + ... + 38435284.

It is an arithmetic number, because the mean of its divisors is an integer number (219878106984).

Almost surely, 2^{1683965116789} is an apocalyptic number.

It is an amenable number.

1683965116789 is a deficient number, since it is larger than the sum of its proper divisors (75059739083).

1683965116789 is an equidigital number, since it uses as much as digits as its factorization.

1683965116789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76827707.

The product of its digits is 117573120, while the sum is 70.

The spelling of 1683965116789 in words is "one trillion, six hundred eighty-three billion, nine hundred sixty-five million, one hundred sixteen thousand, seven hundred eighty-nine".