1061843220 has 72 divisors (see below), whose sum is σ = 3224861640. Its totient is φ = 282812160.

The previous prime is 1061843203. The next prime is 1061843221. The reversal of 1061843220 is 223481601.

1061843220 is a `hidden beast` number, since 1 + 0 + 618 + 43 + 2 + 2 + 0 = 666.

1061843220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 86155524 + 975687696 = 9282^2 + 31236^2 .

It is a super-2 number, since 2×1061843220² = 2255022047719936800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061843221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166246 + ... + 172514.

It is an arithmetic number, because the mean of its divisors is an integer number (44789745).

Almost surely, 2^1061843220 is an apocalyptic number.

1061843220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061843220 is an abundant number, since it is smaller than the sum of its proper divisors (2163018420).

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

1061843220 is a wasteful number, since it uses less digits than its factorization.

1061843220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225 (or 7220 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1061843220 is about 32585.9359233397. The cubic root of 1061843220 is about 1020.2034772839.

The spelling of 1061843220 in words is "one billion, sixty-one million, eight hundred forty-three thousand, two hundred twenty".