1685882741 has 8 divisors (see below), whose sum is σ = 1785642264. Its totient is φ = 1586188800.

The previous prime is 1685882729. The next prime is 1685882747. The reversal of 1685882741 is 1472885861.

It can be written as a sum of positive squares in 4 ways, for example, as 631516900 + 1054365841 = 25130^2 + 32471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1685882741 - 2⁶ = 1685882677 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 1685882741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685882747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42641 + ... + 72041.

It is an arithmetic number, because the mean of its divisors is an integer number (223205283).

Almost surely, 2^1685882741 is an apocalyptic number.

It is an amenable number.

1685882741 is a deficient number, since it is larger than the sum of its proper divisors (99759523).

1685882741 is a wasteful number, since it uses less digits than its factorization.

1685882741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32791.

The product of its digits is 860160, while the sum is 50.

The square root of 1685882741 is about 41059.5024446230. The cubic root of 1685882741 is about 1190.1703357612.

It can be divided in two parts, 16858 and 82741, that added together give a palindrome (99599).

The spelling of 1685882741 in words is "one billion, six hundred eighty-five million, eight hundred eighty-two thousand, seven hundred forty-one".