1351073209 has 2 divisors, whose sum is σ = 1351073210. Its totient is φ = 1351073208.

The previous prime is 1351073197. The next prime is 1351073221. The reversal of 1351073209 is 9023701531.

It is a balanced prime because it is at equal distance from previous prime (1351073197) and next prime (1351073221).

It can be written as a sum of positive squares in only one way, i.e., 936543609 + 414529600 = 30603^2 + 20360^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351073209 - 2⁵ = 1351073177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351023209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675536604 + 675536605.

It is an arithmetic number, because the mean of its divisors is an integer number (675536605).

Almost surely, 2^1351073209 is an apocalyptic number.

It is an amenable number.

1351073209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351073209 is an equidigital number, since it uses as much as digits as its factorization.

1351073209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1351073209 is about 36756.9477650144. The cubic root of 1351073209 is about 1105.5022413346.

The spelling of 1351073209 in words is "one billion, three hundred fifty-one million, seventy-three thousand, two hundred nine".