2638488243 has 8 divisors (see below), whose sum is σ = 3520414656. Its totient is φ = 1757777000.

The previous prime is 2638488227. The next prime is 2638488289. The reversal of 2638488243 is 3428848362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2638488243 - 2⁴ = 2638488227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2638488192 and 2638488201.

It is not an unprimeable number, because it can be changed into a prime (2638408243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298713 + ... + 307418.

It is an arithmetic number, because the mean of its divisors is an integer number (440051832).

Almost surely, 2^2638488243 is an apocalyptic number.

2638488243 is a deficient number, since it is larger than the sum of its proper divisors (881926413).

2638488243 is a wasteful number, since it uses less digits than its factorization.

2638488243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607585.

The product of its digits is 1769472, while the sum is 48.

The square root of 2638488243 is about 51366.2169426560. The cubic root of 2638488243 is about 1381.8207855121.

The spelling of 2638488243 in words is "two billion, six hundred thirty-eight million, four hundred eighty-eight thousand, two hundred forty-three".