1346987009 has 2 divisors, whose sum is σ = 1346987010. Its totient is φ = 1346987008.

The previous prime is 1346986967. The next prime is 1346987069. The reversal of 1346987009 is 9007896431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1087680400 + 259306609 = 32980^2 + 16103^2 .

It is a cyclic number.

It is not a de Polignac number, because 1346987009 - 2¹⁶ = 1346921473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1346987069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673493504 + 673493505.

It is an arithmetic number, because the mean of its divisors is an integer number (673493505).

Almost surely, 2^1346987009 is an apocalyptic number.

It is an amenable number.

1346987009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346987009 is an equidigital number, since it uses as much as digits as its factorization.

1346987009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 1346987009 is about 36701.3216247045. The cubic root of 1346987009 is about 1104.3866183480.

The spelling of 1346987009 in words is "one billion, three hundred forty-six million, nine hundred eighty-seven thousand, nine".