2813129845 has 8 divisors (see below), whose sum is σ = 3376050264. Its totient is φ = 2250307584.

The previous prime is 2813129827. The next prime is 2813129857. The reversal of 2813129845 is 5489213182.

It can be written as a sum of positive squares in 4 ways, for example, as 14085009 + 2799044836 = 3753^2 + 52906^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2813129845 - 2¹⁹ = 2812605557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75877 + ... + 106693.

It is an arithmetic number, because the mean of its divisors is an integer number (422006283).

Almost surely, 2^2813129845 is an apocalyptic number.

It is an amenable number.

2813129845 is a deficient number, since it is larger than the sum of its proper divisors (562920419).

2813129845 is a wasteful number, since it uses less digits than its factorization.

2813129845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49079.

The product of its digits is 138240, while the sum is 43.

The square root of 2813129845 is about 53038.9464921769. The cubic root of 2813129845 is about 1411.6594055613.

The spelling of 2813129845 in words is "two billion, eight hundred thirteen million, one hundred twenty-nine thousand, eight hundred forty-five".