3870185 has 12 divisors (see below), whose sum is σ = 5105604. Its totient is φ = 2814240.

The previous prime is 3870179. The next prime is 3870193. The reversal of 3870185 is 5810783.

3870185 = T₁₉₀ + T₁₉₁ + ... + T₃₁₀.

It can be written as a sum of positive squares in 2 ways, for example, as 495616 + 3374569 = 704^2 + 1837^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3870185 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2594 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (425467).

Almost surely, 2^3870185 is an apocalyptic number.

It is an amenable number.

3870185 is a deficient number, since it is larger than the sum of its proper divisors (1235419).

3870185 is a wasteful number, since it uses less digits than its factorization.

3870185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424 (or 6413 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 3870185 is about 1967.2785771212. The cubic root of 3870185 is about 157.0039486748.

The spelling of 3870185 in words is "three million, eight hundred seventy thousand, one hundred eighty-five".