1803827394 has 56 divisors (see below), whose sum is σ = 4233215232. Its totient is φ = 575122680.

The previous prime is 1803827383. The next prime is 1803827407. The reversal of 1803827394 is 4937283081.

1803827394 is a `hidden beast` number, since 180 + 3 + 82 + 7 + 394 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 6639 + ... + 60429.

Almost surely, 2^1803827394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1803827394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116607616).

1803827394 is an abundant number, since it is smaller than the sum of its proper divisors (2429387838).

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

1803827394 is an equidigital number, since it uses as much as digits as its factorization.

1803827394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53834 (or 53819 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1803827394 is about 42471.4891898083. The cubic root of 1803827394 is about 1217.3019733105.

The spelling of 1803827394 in words is "one billion, eight hundred three million, eight hundred twenty-seven thousand, three hundred ninety-four".