1841213440 has 156 divisors (see below), whose sum is σ = 4863094992. Its totient is φ = 668631040.

The previous prime is 1841213419. The next prime is 1841213443. The reversal of 1841213440 is 443121481.

It is a junction number, because it is equal to n+sod(n) for n = 1841213399 and 1841213408.

It is not an unprimeable number, because it can be changed into a prime (1841213443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2477709 + ... + 2478451.

Almost surely, 2^1841213440 is an apocalyptic number.

1841213440 is a gapful number since it is divisible by the number (10) 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 1841213440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2431547496).

1841213440 is an abundant number, since it is smaller than the sum of its proper divisors (3021881552).

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

1841213440 is an equidigital number, since it uses as much as digits as its factorization.

1841213440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1841213440 is about 42909.3630808009. The cubic root of 1841213440 is about 1225.6544474717.

The spelling of 1841213440 in words is "one billion, eight hundred forty-one million, two hundred thirteen thousand, four hundred forty".