1823840749 has 2 divisors, whose sum is σ = 1823840750. Its totient is φ = 1823840748.

The previous prime is 1823840693. The next prime is 1823840773. The reversal of 1823840749 is 9470483281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1617487524 + 206353225 = 40218^2 + 14365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1823840749 - 2⁹ = 1823840237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1823840699 and 1823840708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1823840779) 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, 911920374 + 911920375.

It is an arithmetic number, because the mean of its divisors is an integer number (911920375).

Almost surely, 2^1823840749 is an apocalyptic number.

It is an amenable number.

1823840749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1823840749 is an equidigital number, since it uses as much as digits as its factorization.

1823840749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1823840749 is about 42706.4485645903. The cubic root of 1823840749 is about 1221.7873892473.

The spelling of 1823840749 in words is "one billion, eight hundred twenty-three million, eight hundred forty thousand, seven hundred forty-nine".