1684574785373 has 4 divisors (see below), whose sum is σ = 1684623709020. Its totient is φ = 1684525861728.

The previous prime is 1684574785349. The next prime is 1684574785433. The reversal of 1684574785373 is 3735874754861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1118291445049 + 566283340324 = 1057493^2 + 752518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1684574785373 - 2¹² = 1684574781277 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 (1684574785343) 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, 24410138 + ... + 24479051.

It is an arithmetic number, because the mean of its divisors is an integer number (421155927255).

Almost surely, 2^{1684574785373} is an apocalyptic number.

It is an amenable number.

1684574785373 is a deficient number, since it is larger than the sum of its proper divisors (48923647).

1684574785373 is an equidigital number, since it uses as much as digits as its factorization.

1684574785373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48923646.

The product of its digits is 474163200, while the sum is 68.

The spelling of 1684574785373 in words is "one trillion, six hundred eighty-four billion, five hundred seventy-four million, seven hundred eighty-five thousand, three hundred seventy-three".