2810228381 has 4 divisors (see below), whose sum is σ = 2863251612. Its totient is φ = 2757205152.

The previous prime is 2810228353. The next prime is 2810228387. The reversal of 2810228381 is 1838220182.

2810228381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1838220182 = 2 ⋅919110091.

It can be written as a sum of positive squares in 2 ways, for example, as 965096356 + 1845132025 = 31066^2 + 42955^2 .

It is a cyclic number.

It is not a de Polignac number, because 2810228381 - 2¹⁴ = 2810211997 is a prime.

It is a super-2 number, since 2×2810228381² = 15794767106755762322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2810228387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26511536 + ... + 26511641.

It is an arithmetic number, because the mean of its divisors is an integer number (715812903).

Almost surely, 2^2810228381 is an apocalyptic number.

It is an amenable number.

2810228381 is a deficient number, since it is larger than the sum of its proper divisors (53023231).

2810228381 is an equidigital number, since it uses as much as digits as its factorization.

2810228381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53023230.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 2810228381 is about 53011.5872333587. The cubic root of 2810228381 is about 1411.1739097917.

The spelling of 2810228381 in words is "two billion, eight hundred ten million, two hundred twenty-eight thousand, three hundred eighty-one".