1409161609 has 2 divisors, whose sum is σ = 1409161610. Its totient is φ = 1409161608.

The previous prime is 1409161597. The next prime is 1409161651. The reversal of 1409161609 is 9061619041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367520400 + 41641209 = 36980^2 + 6453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1409161609 - 2¹⁵ = 1409128841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1409161679) 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, 704580804 + 704580805.

It is an arithmetic number, because the mean of its divisors is an integer number (704580805).

Almost surely, 2^1409161609 is an apocalyptic number.

It is an amenable number.

1409161609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409161609 is an equidigital number, since it uses as much as digits as its factorization.

1409161609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1409161609 is about 37538.8013793728. The cubic root of 1409161609 is about 1121.1238742525.

The spelling of 1409161609 in words is "one billion, four hundred nine million, one hundred sixty-one thousand, six hundred nine".