1680594475890 has 64 divisors (see below), whose sum is σ = 4408235644032. Its totient is φ = 406663718400.

The previous prime is 1680594475853. The next prime is 1680594475921. The reversal of 1680594475890 is 985744950861.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4528227 + ... + 4885286.

It is an arithmetic number, because the mean of its divisors is an integer number (68878681938).

Almost surely, 2^{1680594475890} is an apocalyptic number.

1680594475890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1680594475890 is an abundant number, since it is smaller than the sum of its proper divisors (2727641168142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1680594475890 is a wasteful number, since it uses less digits than its factorization.

1680594475890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9414075.

The product of its (nonzero) digits is 87091200, while the sum is 66.

The spelling of 1680594475890 in words is "one trillion, six hundred eighty billion, five hundred ninety-four million, four hundred seventy-five thousand, eight hundred ninety".