2443280813 has 4 divisors (see below), whose sum is σ = 2571874560. Its totient is φ = 2314687068.

The previous prime is 2443280789. The next prime is 2443280821. The reversal of 2443280813 is 3180823442.

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 a cyclic number.

It is not a de Polignac number, because 2443280813 - 2²⁰ = 2442232237 is a prime.

It is a super-2 number, since 2×2443280813² = 11939242262347881938, which contains 22 as substring.

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 (2443280843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64296845 + ... + 64296882.

It is an arithmetic number, because the mean of its divisors is an integer number (642968640).

Almost surely, 2^2443280813 is an apocalyptic number.

It is an amenable number.

2443280813 is a deficient number, since it is larger than the sum of its proper divisors (128593747).

2443280813 is a wasteful number, since it uses less digits than its factorization.

2443280813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128593746.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 2443280813 is about 49429.5540441141. The cubic root of 2443280813 is about 1346.8662223131.

The spelling of 2443280813 in words is "two billion, four hundred forty-three million, two hundred eighty thousand, eight hundred thirteen".