1838339386158 has 32 divisors (see below), whose sum is σ = 4011499498752. Its totient is φ = 556992374400.

The previous prime is 1838339386139. The next prime is 1838339386183. The reversal of 1838339386158 is 8516839338381.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1541266 + ... + 2460117.

It is an arithmetic number, because the mean of its divisors is an integer number (125359359336).

Almost surely, 2^{1838339386158} is an apocalyptic number.

1838339386158 is an abundant number, since it is smaller than the sum of its proper divisors (2173160112594).

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

1838339386158 is a wasteful number, since it uses less digits than its factorization.

1838339386158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008360.

The product of its digits is 89579520, while the sum is 66.

The spelling of 1838339386158 in words is "one trillion, eight hundred thirty-eight billion, three hundred thirty-nine million, three hundred eighty-six thousand, one hundred fifty-eight".