2638130239 has 2 divisors, whose sum is σ = 2638130240. Its totient is φ = 2638130238.

The previous prime is 2638130237. The next prime is 2638130311. The reversal of 2638130239 is 9320318362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2638130239 - 2¹ = 2638130237 is a prime.

Together with 2638130237, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2638130198 and 2638130207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2638130237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319065119 + 1319065120.

It is an arithmetic number, because the mean of its divisors is an integer number (1319065120).

Almost surely, 2^2638130239 is an apocalyptic number.

2638130239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638130239 is an equidigital number, since it uses as much as digits as its factorization.

2638130239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 2638130239 is about 51362.7320048301. The cubic root of 2638130239 is about 1381.7582851080.

The spelling of 2638130239 in words is "two billion, six hundred thirty-eight million, one hundred thirty thousand, two hundred thirty-nine".