1838504249 has 2 divisors, whose sum is σ = 1838504250. Its totient is φ = 1838504248.

The previous prime is 1838504231. The next prime is 1838504263. The reversal of 1838504249 is 9424058381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1108423849 + 730080400 = 33293^2 + 27020^2 .

It is a cyclic number.

It is not a de Polignac number, because 1838504249 - 2⁸ = 1838503993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1838504449) 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, 919252124 + 919252125.

It is an arithmetic number, because the mean of its divisors is an integer number (919252125).

Almost surely, 2^1838504249 is an apocalyptic number.

It is an amenable number.

1838504249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838504249 is an equidigital number, since it uses as much as digits as its factorization.

1838504249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 1838504249 is about 42877.7826968699. The cubic root of 1838504249 is about 1225.0530031766.

The spelling of 1838504249 in words is "one billion, eight hundred thirty-eight million, five hundred four thousand, two hundred forty-nine".