1838004019 has 2 divisors, whose sum is σ = 1838004020. Its totient is φ = 1838004018.

The previous prime is 1838004017. The next prime is 1838004023. The reversal of 1838004019 is 9104008381.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1838004019 - 2¹ = 1838004017 is a prime.

It is a super-2 number, since 2×1838004019² = 6756517547720304722, which contains 22 as substring.

Together with 1838004017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1838004017) 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, 919002009 + 919002010.

It is an arithmetic number, because the mean of its divisors is an integer number (919002010).

Almost surely, 2^1838004019 is an apocalyptic number.

1838004019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838004019 is an equidigital number, since it uses as much as digits as its factorization.

1838004019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1838004019 is about 42871.9490926177. The cubic root of 1838004019 is about 1224.9418867892.

The spelling of 1838004019 in words is "one billion, eight hundred thirty-eight million, four thousand, nineteen".