1285486313 has 2 divisors, whose sum is σ = 1285486314. Its totient is φ = 1285486312.

The previous prime is 1285486309. The next prime is 1285486339. The reversal of 1285486313 is 3136845821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1285365904 + 120409 = 35852^2 + 347^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285486313 - 2² = 1285486309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1285486303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642743156 + 642743157.

It is an arithmetic number, because the mean of its divisors is an integer number (642743157).

Almost surely, 2^1285486313 is an apocalyptic number.

It is an amenable number.

1285486313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285486313 is an equidigital number, since it uses as much as digits as its factorization.

1285486313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 1285486313 is about 35853.6792114840. The cubic root of 1285486313 is about 1087.3161006341.

The spelling of 1285486313 in words is "one billion, two hundred eighty-five million, four hundred eighty-six thousand, three hundred thirteen".