1803855827930 has 16 divisors (see below), whose sum is σ = 3496705143624. Its totient is φ = 666039074880.

The previous prime is 1803855827927. The next prime is 1803855827953. The reversal of 1803855827930 is 397285583081.

It is a Cunningham number, because it is equal to 1343077²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1338910494769 + 464945333161 = 1157113^2 + 681869^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1803855827930.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6937906901 + ... + 6937907160.

Almost surely, 2^{1803855827930} is an apocalyptic number.

1803855827930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1803855827930 is a deficient number, since it is larger than the sum of its proper divisors (1692849315694).

1803855827930 is a wasteful number, since it uses less digits than its factorization.

1803855827930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13875814081.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 1803855827930 in words is "one trillion, eight hundred three billion, eight hundred fifty-five million, eight hundred twenty-seven thousand, nine hundred thirty".