3638025913 has 2 divisors, whose sum is σ = 3638025914. Its totient is φ = 3638025912.

The previous prime is 3638025773. The next prime is 3638025917. The reversal of 3638025913 is 3195208363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3632111289 + 5914624 = 60267^2 + 2432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3638025913 is a prime.

It is not a weakly prime, because it can be changed into another prime (3638025917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819012956 + 1819012957.

It is an arithmetic number, because the mean of its divisors is an integer number (1819012957).

Almost surely, 2^3638025913 is an apocalyptic number.

It is an amenable number.

3638025913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638025913 is an equidigital number, since it uses as much as digits as its factorization.

3638025913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 3638025913 is about 60316.0502105368. The cubic root of 3638025913 is about 1537.9962009857.

The spelling of 3638025913 in words is "three billion, six hundred thirty-eight million, twenty-five thousand, nine hundred thirteen".