1909146361289 has 2 divisors, whose sum is σ = 1909146361290. Its totient is φ = 1909146361288.

The previous prime is 1909146361237. The next prime is 1909146361301. The reversal of 1909146361289 is 9821636419091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893142087225 + 16004274064 = 1375915^2 + 126508^2 .

It is a cyclic number.

It is not a de Polignac number, because 1909146361289 - 2⁸ = 1909146361033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1909146361229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954573180644 + 954573180645.

It is an arithmetic number, because the mean of its divisors is an integer number (954573180645).

Almost surely, 2^{1909146361289} is an apocalyptic number.

It is an amenable number.

1909146361289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1909146361289 is an equidigital number, since it uses as much as digits as its factorization.

1909146361289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The spelling of 1909146361289 in words is "one trillion, nine hundred nine billion, one hundred forty-six million, three hundred sixty-one thousand, two hundred eighty-nine".