2993423813 has 4 divisors (see below), whose sum is σ = 2993877228. Its totient is φ = 2992970400.

The previous prime is 2993423809. The next prime is 2993423821. The reversal of 2993423813 is 3183243992.

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 1857868609 + 1135555204 = 43103^2 + 33698^2 .

It is a cyclic number.

It is not a de Polignac number, because 2993423813 - 2² = 2993423809 is a prime.

It is a super-2 number, since 2×2993423813² = 17921172248470917938, 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 (2993428813) 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, 216656 + ... + 230057.

It is an arithmetic number, because the mean of its divisors is an integer number (748469307).

Almost surely, 2^2993423813 is an apocalyptic number.

It is an amenable number.

2993423813 is a deficient number, since it is larger than the sum of its proper divisors (453415).

2993423813 is an equidigital number, since it uses as much as digits as its factorization.

2993423813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453414.

The product of its digits is 279936, while the sum is 44.

The square root of 2993423813 is about 54712.1907165122. The cubic root of 2993423813 is about 1441.1949656925.

The spelling of 2993423813 in words is "two billion, nine hundred ninety-three million, four hundred twenty-three thousand, eight hundred thirteen".