1816837344 has 384 divisors, whose sum is σ = 6508615680. Its totient is φ = 481738752.

The previous prime is 1816837303. The next prime is 1816837357. The reversal of 1816837344 is 4437386181.

1816837344 is a `hidden beast` number, since 181 + 68 + 373 + 44 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1816837344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5146672 + ... + 5147024.

It is an arithmetic number, because the mean of its divisors is an integer number (16949520).

Almost surely, 2^1816837344 is an apocalyptic number.

1816837344 is a gapful number since it is divisible by the number (14) 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 1816837344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3254307840).

1816837344 is an abundant number, since it is smaller than the sum of its proper divisors (4691778336).

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

1816837344 is a wasteful number, since it uses less digits than its factorization.

1816837344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 425 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1816837344 is about 42624.3749983504. The cubic root of 1816837344 is about 1220.2215274516.

It can be divided in two parts, 1816837 and 344, that added together give a palindrome (1817181).

The spelling of 1816837344 in words is "one billion, eight hundred sixteen million, eight hundred thirty-seven thousand, three hundred forty-four".