1909340413 has 2 divisors, whose sum is σ = 1909340414. Its totient is φ = 1909340412.

The previous prime is 1909340401. The next prime is 1909340441. The reversal of 1909340413 is 3140439091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1855714084 + 53626329 = 43078^2 + 7323^2 .

It is a cyclic number.

It is not a de Polignac number, because 1909340413 - 2¹³ = 1909332221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1909340513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954670206 + 954670207.

It is an arithmetic number, because the mean of its divisors is an integer number (954670207).

Almost surely, 2^1909340413 is an apocalyptic number.

It is an amenable number.

1909340413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1909340413 is an equidigital number, since it uses as much as digits as its factorization.

1909340413 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 34.

The square root of 1909340413 is about 43695.9999656719. Note that the first 4 decimals coincide. The cubic root of 1909340413 is about 1240.5886064806.

The spelling of 1909340413 in words is "one billion, nine hundred nine million, three hundred forty thousand, four hundred thirteen".