1286733913 has 2 divisors, whose sum is σ = 1286733914. Its totient is φ = 1286733912.

The previous prime is 1286733911. The next prime is 1286733971. The reversal of 1286733913 is 3193376821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089528064 + 197205849 = 33008^2 + 14043^2 .

It is a cyclic number.

It is not a de Polignac number, because 1286733913 - 2¹ = 1286733911 is a prime.

Together with 1286733911, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1286733913.

It is not a weakly prime, because it can be changed into another prime (1286733911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643366956 + 643366957.

It is an arithmetic number, because the mean of its divisors is an integer number (643366957).

Almost surely, 2^1286733913 is an apocalyptic number.

It is an amenable number.

1286733913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1286733913 is an equidigital number, since it uses as much as digits as its factorization.

1286733913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 1286733913 is about 35871.0734854702. The cubic root of 1286733913 is about 1087.6677436759.

The spelling of 1286733913 in words is "one billion, two hundred eighty-six million, seven hundred thirty-three thousand, nine hundred thirteen".