1843480949 has 2 divisors, whose sum is σ = 1843480950. Its totient is φ = 1843480948.

The previous prime is 1843480943. The next prime is 1843480963. The reversal of 1843480949 is 9490843481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1807780324 + 35700625 = 42518^2 + 5975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1843480949 - 2²⁰ = 1842432373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1843480897 and 1843480906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1843480943) 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, 921740474 + 921740475.

It is an arithmetic number, because the mean of its divisors is an integer number (921740475).

Almost surely, 2^1843480949 is an apocalyptic number.

It is an amenable number.

1843480949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1843480949 is an equidigital number, since it uses as much as digits as its factorization.

1843480949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 1843480949 is about 42935.7770280217. Note that the first 3 decimals coincide. The cubic root of 1843480949 is about 1226.1573843444.

The spelling of 1843480949 in words is "one billion, eight hundred forty-three million, four hundred eighty thousand, nine hundred forty-nine".