2663938443 has 4 divisors (see below), whose sum is σ = 3551917928. Its totient is φ = 1775958960.

The previous prime is 2663938439. The next prime is 2663938489. The reversal of 2663938443 is 3448393662.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2663938443 - 2² = 2663938439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2663938392 and 2663938401.

It is not an unprimeable number, because it can be changed into a prime (2663938423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443989738 + ... + 443989743.

It is an arithmetic number, because the mean of its divisors is an integer number (887979482).

Almost surely, 2^2663938443 is an apocalyptic number.

2663938443 is a deficient number, since it is larger than the sum of its proper divisors (887979485).

2663938443 is an equidigital number, since it uses as much as digits as its factorization.

2663938443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887979484.

The product of its digits is 2239488, while the sum is 48.

The square root of 2663938443 is about 51613.3552774861. The cubic root of 2663938443 is about 1386.2494761741.

The spelling of 2663938443 in words is "two billion, six hundred sixty-three million, nine hundred thirty-eight thousand, four hundred forty-three".