1284486673 has 2 divisors, whose sum is σ = 1284486674. Its totient is φ = 1284486672.

The previous prime is 1284486667. The next prime is 1284486677. The reversal of 1284486673 is 3766844821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1233906129 + 50580544 = 35127^2 + 7112^2 .

It is an emirp because it is prime and its reverse (3766844821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1284486673 - 2²⁹ = 747615761 is a prime.

It is a super-2 number, since 2×1284486673² = 3299812026229217858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1284486677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642243336 + 642243337.

It is an arithmetic number, because the mean of its divisors is an integer number (642243337).

Almost surely, 2^1284486673 is an apocalyptic number.

It is an amenable number.

1284486673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284486673 is an equidigital number, since it uses as much as digits as its factorization.

1284486673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 49.

The square root of 1284486673 is about 35839.7359504782. The cubic root of 1284486673 is about 1087.0341822864.

The spelling of 1284486673 in words is "one billion, two hundred eighty-four million, four hundred eighty-six thousand, six hundred seventy-three".