1685186685350 has 48 divisors (see below), whose sum is σ = 3792944566368. Its totient is φ = 543791331840.

The previous prime is 1685186685331. The next prime is 1685186685353. The reversal of 1685186685350 is 535866815861.

It is a happy number.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685186685353) 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 23 ways as a sum of consecutive naturals, for example, 141606377 + ... + 141618276.

It is an arithmetic number, because the mean of its divisors is an integer number (79019678466).

Almost surely, 2^{1685186685350} is an apocalyptic number.

1685186685350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1685186685350 is an abundant number, since it is smaller than the sum of its proper divisors (2107757881018).

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

1685186685350 is a wasteful number, since it uses less digits than its factorization.

1685186685350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283224689 (or 283224684 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 62.

The spelling of 1685186685350 in words is "one trillion, six hundred eighty-five billion, one hundred eighty-six million, six hundred eighty-five thousand, three hundred fifty".