1838410009 has 8 divisors (see below), whose sum is σ = 1919051528. Its totient is φ = 1759397760.

The previous prime is 1838410001. The next prime is 1838410031. The reversal of 1838410009 is 9000148381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 118483225 + 1719926784 = 10885^2 + 41472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1838410009 - 2³ = 1838410001 is a prime.

It is a super-2 number, since 2×1838410009² = 6759502722382760162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1838410001) 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 in 7 ways as a sum of consecutive naturals, for example, 405012 + ... + 409525.

It is an arithmetic number, because the mean of its divisors is an integer number (239881441).

Almost surely, 2^1838410009 is an apocalyptic number.

It is an amenable number.

1838410009 is a deficient number, since it is larger than the sum of its proper divisors (80641519).

1838410009 is an equidigital number, since it uses as much as digits as its factorization.

1838410009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814635.

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

The square root of 1838410009 is about 42876.6837453644. The cubic root of 1838410009 is about 1225.0320711304.

The spelling of 1838410009 in words is "one billion, eight hundred thirty-eight million, four hundred ten thousand, nine".