1838185842 has 16 divisors (see below), whose sum is σ = 3683099232. Its totient is φ = 611607360.

The previous prime is 1838185823. The next prime is 1838185859. The reversal of 1838185842 is 2485818381.

It is a junction number, because it is equal to n+sod(n) for n = 1838185791 and 1838185800.

It is an unprimeable number.

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, 276759 + ... + 283322.

It is an arithmetic number, because the mean of its divisors is an integer number (230193702).

Almost surely, 2^1838185842 is an apocalyptic number.

1838185842 is an abundant number, since it is smaller than the sum of its proper divisors (1844913390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1838185842 is a wasteful number, since it uses less digits than its factorization.

1838185842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560633.

The product of its digits is 491520, while the sum is 48.

The square root of 1838185842 is about 42874.0695759103. The cubic root of 1838185842 is about 1224.9822775723.

The spelling of 1838185842 in words is "one billion, eight hundred thirty-eight million, one hundred eighty-five thousand, eight hundred forty-two".