1428638327 has 2 divisors, whose sum is σ = 1428638328. Its totient is φ = 1428638326.

The previous prime is 1428638297. The next prime is 1428638359. The reversal of 1428638327 is 7238368241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428638327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428608327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714319163 + 714319164.

It is an arithmetic number, because the mean of its divisors is an integer number (714319164).

Almost surely, 2^1428638327 is an apocalyptic number.

1428638327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428638327 is an equidigital number, since it uses as much as digits as its factorization.

1428638327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 1428638327 is about 37797.3322735878. The cubic root of 1428638327 is about 1126.2654604856.

The spelling of 1428638327 in words is "one billion, four hundred twenty-eight million, six hundred thirty-eight thousand, three hundred twenty-seven".