1826943820 has 144 divisors (see below), whose sum is σ = 4448243520. Its totient is φ = 626047488.

The previous prime is 1826943817. The next prime is 1826943871. The reversal of 1826943820 is 283496281.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 5088801 + ... + 5089159.

It is an arithmetic number, because the mean of its divisors is an integer number (30890580).

Almost surely, 2^1826943820 is an apocalyptic number.

1826943820 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 1826943820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2224121760).

1826943820 is an abundant number, since it is smaller than the sum of its proper divisors (2621299700).

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

1826943820 is a wasteful number, since it uses less digits than its factorization.

1826943820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1826943820 is about 42742.7633641064. The cubic root of 1826943820 is about 1222.4799103985.

The spelling of 1826943820 in words is "one billion, eight hundred twenty-six million, nine hundred forty-three thousand, eight hundred twenty".