1838319423839 has 4 divisors (see below), whose sum is σ = 1839428851824. Its totient is φ = 1837209995856.

The previous prime is 1838319423827. The next prime is 1838319423859. The reversal of 1838319423839 is 9383249138381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1838319423839 - 2⁴ = 1838319423823 is a prime.

It is a super-3 number, since 3×1838319423839³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838319423859) 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 3 ways as a sum of consecutive naturals, for example, 554711507 + ... + 554714820.

It is an arithmetic number, because the mean of its divisors is an integer number (459857212956).

Almost surely, 2^{1838319423839} is an apocalyptic number.

1838319423839 is a deficient number, since it is larger than the sum of its proper divisors (1109427985).

1838319423839 is a wasteful number, since it uses less digits than its factorization.

1838319423839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109427984.

The product of its digits is 26873856, while the sum is 62.

The spelling of 1838319423839 in words is "one trillion, eight hundred thirty-eight billion, three hundred nineteen million, four hundred twenty-three thousand, eight hundred thirty-nine".