1356012689 has 2 divisors, whose sum is σ = 1356012690. Its totient is φ = 1356012688.

The previous prime is 1356012683. The next prime is 1356012733. The reversal of 1356012689 is 9862106531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 680792464 + 675220225 = 26092^2 + 25985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356012689 - 2⁴ = 1356012673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1356012683) 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, 678006344 + 678006345.

It is an arithmetic number, because the mean of its divisors is an integer number (678006345).

Almost surely, 2^1356012689 is an apocalyptic number.

It is an amenable number.

1356012689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356012689 is an equidigital number, since it uses as much as digits as its factorization.

1356012689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1356012689 is about 36824.0775716107. The cubic root of 1356012689 is about 1106.8478296807.

The spelling of 1356012689 in words is "one billion, three hundred fifty-six million, twelve thousand, six hundred eighty-nine".