638084327 has 2 divisors, whose sum is σ = 638084328. Its totient is φ = 638084326.

The previous prime is 638084297. The next prime is 638084347. The reversal of 638084327 is 723480836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 638084327 - 2⁶ = 638084263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (638084347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319042163 + 319042164.

It is an arithmetic number, because the mean of its divisors is an integer number (319042164).

Almost surely, 2^638084327 is an apocalyptic number.

638084327 is a deficient number, since it is larger than the sum of its proper divisors (1).

638084327 is an equidigital number, since it uses as much as digits as its factorization.

638084327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 638084327 is about 25260.3310944255. The cubic root of 638084327 is about 860.9131849464.

The spelling of 638084327 in words is "six hundred thirty-eight million, eighty-four thousand, three hundred twenty-seven".