1684854473729 has 4 divisors (see below), whose sum is σ = 1925547969984. Its totient is φ = 1444160977476.

The previous prime is 1684854473717. The next prime is 1684854473749. The reversal of 1684854473729 is 9273744584861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1684854473729 - 2⁸ = 1684854473473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1684854473749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120346748117 + ... + 120346748130.

It is an arithmetic number, because the mean of its divisors is an integer number (481386992496).

Almost surely, 2^{1684854473729} is an apocalyptic number.

It is an amenable number.

1684854473729 is a deficient number, since it is larger than the sum of its proper divisors (240693496255).

1684854473729 is an equidigital number, since it uses as much as digits as its factorization.

1684854473729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240693496254.

The product of its digits is 325140480, while the sum is 68.

The spelling of 1684854473729 in words is "one trillion, six hundred eighty-four billion, eight hundred fifty-four million, four hundred seventy-three thousand, seven hundred twenty-nine".