1285984327 has 2 divisors, whose sum is σ = 1285984328. Its totient is φ = 1285984326.

The previous prime is 1285984313. The next prime is 1285984457. The reversal of 1285984327 is 7234895821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1285984327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285984927) 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, 642992163 + 642992164.

It is an arithmetic number, because the mean of its divisors is an integer number (642992164).

Almost surely, 2^1285984327 is an apocalyptic number.

1285984327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285984327 is an equidigital number, since it uses as much as digits as its factorization.

1285984327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 1285984327 is about 35860.6236281524. The cubic root of 1285984327 is about 1087.4564959388.

The spelling of 1285984327 in words is "one billion, two hundred eighty-five million, nine hundred eighty-four thousand, three hundred twenty-seven".