2638228349 has 2 divisors, whose sum is σ = 2638228350. Its totient is φ = 2638228348.

The previous prime is 2638228343. The next prime is 2638228391. The reversal of 2638228349 is 9438228362.

It is a happy number.

2638228349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2461152100 + 177076249 = 49610^2 + 13307^2 .

It is a cyclic number.

It is not a de Polignac number, because 2638228349 - 2⁸ = 2638228093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2638228343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319114174 + 1319114175.

It is an arithmetic number, because the mean of its divisors is an integer number (1319114175).

Almost surely, 2^2638228349 is an apocalyptic number.

It is an amenable number.

2638228349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638228349 is an equidigital number, since it uses as much as digits as its factorization.

2638228349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 47.

The square root of 2638228349 is about 51363.6870658640. The cubic root of 2638228349 is about 1381.7754137322.

The spelling of 2638228349 in words is "two billion, six hundred thirty-eight million, two hundred twenty-eight thousand, three hundred forty-nine".