2943813 has 4 divisors (see below), whose sum is σ = 3925088. Its totient is φ = 1962540.

The previous prime is 2943797. The next prime is 2943821. The reversal of 2943813 is 3183492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2943813 - 2⁴ = 2943797 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2943833) 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, 490633 + ... + 490638.

It is an arithmetic number, because the mean of its divisors is an integer number (981272).

2^2943813 is an apocalyptic number.

It is an amenable number.

2943813 is a deficient number, since it is larger than the sum of its proper divisors (981275).

2943813 is an equidigital number, since it uses as much as digits as its factorization.

2943813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981274.

The product of its digits is 5184, while the sum is 30.

The square root of 2943813 is about 1715.7543530471. The cubic root of 2943813 is about 143.3188802204.

The spelling of 2943813 in words is "two million, nine hundred forty-three thousand, eight hundred thirteen".