1838381776 has 80 divisors (see below), whose sum is σ = 4501819008. Its totient is φ = 706406400.

The previous prime is 1838381773. The next prime is 1838381813. The reversal of 1838381776 is 6771838381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838381773) 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 15 ways as a sum of consecutive naturals, for example, 79716 + ... + 100156.

Almost surely, 2^1838381776 is an apocalyptic number.

1838381776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1838381776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2250909504).

1838381776 is an abundant number, since it is smaller than the sum of its proper divisors (2663437232).

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

1838381776 is a wasteful number, since it uses less digits than its factorization.

1838381776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20540 (or 20534 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 1838381776 is about 42876.3545092164. The cubic root of 1838381776 is about 1225.0258000397.

The spelling of 1838381776 in words is "one billion, eight hundred thirty-eight million, three hundred eighty-one thousand, seven hundred seventy-six".