1683973401723 has 20 divisors (see below), whose sum is σ = 2553110962600. Its totient is φ = 1105892976672.

The previous prime is 1683973401689. The next prime is 1683973401821. The reversal of 1683973401723 is 3271043793861.

1683973401723 is a `hidden beast` number, since 1 + 6 + 83 + 97 + 3 + 401 + 72 + 3 = 666.

It is not a de Polignac number, because 1683973401723 - 2⁶ = 1683973401659 is a prime.

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 1683973401723.

It is not an unprimeable number, because it can be changed into a prime (1683973401023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 155142298 + ... + 155153151.

It is an arithmetic number, because the mean of its divisors is an integer number (127655548130).

Almost surely, 2^{1683973401723} is an apocalyptic number.

1683973401723 is a deficient number, since it is larger than the sum of its proper divisors (869137560877).

1683973401723 is an equidigital number, since it uses as much as digits as its factorization.

1683973401723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310295528 (or 310295519 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 1683973401723 in words is "one trillion, six hundred eighty-three billion, nine hundred seventy-three million, four hundred one thousand, seven hundred twenty-three".