2045852813 has 4 divisors (see below), whose sum is σ = 2073878268. Its totient is φ = 2017827360.

The previous prime is 2045852749. The next prime is 2045852819. The reversal of 2045852813 is 3182585402.

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 685497124 + 1360355689 = 26182^2 + 36883^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045852813 - 2⁶ = 2045852749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045852819) 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, 14012618 + ... + 14012763.

It is an arithmetic number, because the mean of its divisors is an integer number (518469567).

Almost surely, 2^2045852813 is an apocalyptic number.

It is an amenable number.

2045852813 is a deficient number, since it is larger than the sum of its proper divisors (28025455).

2045852813 is an equidigital number, since it uses as much as digits as its factorization.

2045852813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28025454.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 2045852813 is about 45231.1044857408. The cubic root of 2045852813 is about 1269.4768781929.

The spelling of 2045852813 in words is "two billion, forty-five million, eight hundred fifty-two thousand, eight hundred thirteen".