3812813285 has 4 divisors (see below), whose sum is σ = 4575375948. Its totient is φ = 3050250624.

The previous prime is 3812813273. The next prime is 3812813317. The reversal of 3812813285 is 5823182183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 950242276 + 2862571009 = 30826^2 + 53503^2 .

It is a cyclic number.

It is not a de Polignac number, because 3812813285 - 2¹⁴ = 3812796901 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 381281324 + ... + 381281333.

It is an arithmetic number, because the mean of its divisors is an integer number (1143843987).

Almost surely, 2^3812813285 is an apocalyptic number.

It is an amenable number.

3812813285 is a deficient number, since it is larger than the sum of its proper divisors (762562663).

3812813285 is an equidigital number, since it uses as much as digits as its factorization.

3812813285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762562662.

The product of its digits is 92160, while the sum is 41.

The square root of 3812813285 is about 61747.9820318041. The cubic root of 3812813285 is about 1562.2427314879.

The spelling of 3812813285 in words is "three billion, eight hundred twelve million, eight hundred thirteen thousand, two hundred eighty-five".