2443803681 has 16 divisors (see below), whose sum is σ = 3630256128. Its totient is φ = 1449579600.

The previous prime is 2443803679. The next prime is 2443803707. The reversal of 2443803681 is 1863083442.

It is a happy number.

It is not a de Polignac number, because 2443803681 - 2¹ = 2443803679 is a prime.

It is a super-2 number, since 2×2443803681² = 11944352862538299522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2443803181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786265 + ... + 789366.

It is an arithmetic number, because the mean of its divisors is an integer number (226891008).

Almost surely, 2^2443803681 is an apocalyptic number.

It is an amenable number.

2443803681 is a deficient number, since it is larger than the sum of its proper divisors (1186452447).

2443803681 is a wasteful number, since it uses less digits than its factorization.

2443803681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575692.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 2443803681 is about 49434.8427832030. The cubic root of 2443803681 is about 1346.9622930028.

The spelling of 2443803681 in words is "two billion, four hundred forty-three million, eight hundred three thousand, six hundred eighty-one".