1001841685 has 16 divisors (see below), whose sum is σ = 1339334640. Its totient is φ = 714309120.

The previous prime is 1001841679. The next prime is 1001841691. The reversal of 1001841685 is 5861481001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1001841679) and next prime (1001841691).

It can be written as a sum of positive squares in 8 ways, for example, as 362864401 + 638977284 = 19049^2 + 25278^2 .

It is not a de Polignac number, because 1001841685 - 2⁹ = 1001841173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001841685.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 263856 + ... + 267625.

It is an arithmetic number, because the mean of its divisors is an integer number (83708415).

Almost surely, 2^1001841685 is an apocalyptic number.

It is an amenable number.

1001841685 is a deficient number, since it is larger than the sum of its proper divisors (337492955).

1001841685 is a wasteful number, since it uses less digits than its factorization.

1001841685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531528.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 1001841685 is about 31651.8828033973. The cubic root of 1001841685 is about 1000.6135185181.

The spelling of 1001841685 in words is "one billion, one million, eight hundred forty-one thousand, six hundred eighty-five".