3685817885 has 16 divisors (see below), whose sum is σ = 4764048960. Its totient is φ = 2728494720.

The previous prime is 3685817857. The next prime is 3685817893. The reversal of 3685817885 is 5887185863.

It is not a de Polignac number, because 3685817885 - 2²⁸ = 3417382429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447056 + ... + 455225.

It is an arithmetic number, because the mean of its divisors is an integer number (297753060).

Almost surely, 2^3685817885 is an apocalyptic number.

It is an amenable number.

3685817885 is a deficient number, since it is larger than the sum of its proper divisors (1078231075).

3685817885 is a wasteful number, since it uses less digits than its factorization.

3685817885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902348.

The product of its digits is 12902400, while the sum is 59.

The square root of 3685817885 is about 60710.9371118582. The cubic root of 3685817885 is about 1544.7016994780.

The spelling of 3685817885 in words is "three billion, six hundred eighty-five million, eight hundred seventeen thousand, eight hundred eighty-five".