1310789 has 2 divisors, whose sum is σ = 1310790. Its totient is φ = 1310788.

The previous prime is 1310779. The next prime is 1310797. The reversal of 1310789 is 9870131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722500 + 588289 = 850^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310789 - 2¹² = 1306693 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655394 + 655395.

It is an arithmetic number, because the mean of its divisors is an integer number (655395).

2^1310789 is an apocalyptic number.

It is an amenable number.

1310789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310789 is an equidigital number, since it uses as much as digits as its factorization.

1310789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1310789 is about 1144.8969385932. The cubic root of 1310789 is about 109.4403809368.

The spelling of 1310789 in words is "one million, three hundred ten thousand, seven hundred eighty-nine".