1909484459 has 2 divisors, whose sum is σ = 1909484460. Its totient is φ = 1909484458.

The previous prime is 1909484441. The next prime is 1909484483. The reversal of 1909484459 is 9544849091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1909484459 - 2²⁰ = 1908435883 is a prime.

It is a super-2 number, since 2×1909484459² = 7292261798325045362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1909484459.

It is not a weakly prime, because it can be changed into another prime (1909484429) 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, 954742229 + 954742230.

It is an arithmetic number, because the mean of its divisors is an integer number (954742230).

Almost surely, 2^1909484459 is an apocalyptic number.

1909484459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1909484459 is an equidigital number, since it uses as much as digits as its factorization.

1909484459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 1909484459 is about 43697.6482090284. The cubic root of 1909484459 is about 1240.6198035250.

The spelling of 1909484459 in words is "one billion, nine hundred nine million, four hundred eighty-four thousand, four hundred fifty-nine".