3880185785 has 16 divisors (see below), whose sum is σ = 5430000000. Its totient is φ = 2660697648.

The previous prime is 3880185737. The next prime is 3880185811. The reversal of 3880185785 is 5875810883.

It is a happy number.

It is not a de Polignac number, because 3880185785 - 2¹² = 3880181689 is a prime.

It is a super-2 number, since 2×3880185785² = 30111683452232132450, which contains 22 as substring.

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, 1129535 + ... + 1132964.

It is an arithmetic number, because the mean of its divisors is an integer number (339375000).

Almost surely, 2^3880185785 is an apocalyptic number.

3880185785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3880185785 is a deficient number, since it is larger than the sum of its proper divisors (1549814215).

3880185785 is an equidigital number, since it uses as much as digits as its factorization.

3880185785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262525 (or 2262511 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 53.

The square root of 3880185785 is about 62291.1372909501. The cubic root of 3880185785 is about 1571.3906815953.

The spelling of 3880185785 in words is "three billion, eight hundred eighty million, one hundred eighty-five thousand, seven hundred eighty-five".