1683971111719 has 4 divisors (see below), whose sum is σ = 1813507351096. Its totient is φ = 1554434872344.

The previous prime is 1683971111707. The next prime is 1683971111807. The reversal of 1683971111719 is 9171111793861.

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 1683971111719 - 2¹³ = 1683971103527 is a prime.

It is a super-2 number, since 2×1683971111719² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1683971111719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683971181719) 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, 64768119669 + ... + 64768119694.

It is an arithmetic number, because the mean of its divisors is an integer number (453376837774).

Almost surely, 2^{1683971111719} is an apocalyptic number.

1683971111719 is a deficient number, since it is larger than the sum of its proper divisors (129536239377).

1683971111719 is a wasteful number, since it uses less digits than its factorization.

1683971111719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129536239376.

The product of its digits is 571536, while the sum is 55.

The spelling of 1683971111719 in words is "one trillion, six hundred eighty-three billion, nine hundred seventy-one million, one hundred eleven thousand, seven hundred nineteen".