1061806020 has 96 divisors (see below), whose sum is σ = 3331069056. Its totient is φ = 250444800.

The previous prime is 1061806007. The next prime is 1061806027. The reversal of 1061806020 is 206081601.

It is a super-2 number, since 2×1061806020² = 2254864048216480800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061806027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2680 + ... + 46160.

It is an arithmetic number, because the mean of its divisors is an integer number (34698636).

Almost surely, 2^1061806020 is an apocalyptic number.

1061806020 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 1061806020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665534528).

1061806020 is an abundant number, since it is smaller than the sum of its proper divisors (2269263036).

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

1061806020 is a wasteful number, since it uses less digits than its factorization.

1061806020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43541 (or 43539 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1061806020 is about 32585.3651199430. The cubic root of 1061806020 is about 1020.1915634056.

Adding to 1061806020 its reverse (206081601), we get a palindrome (1267887621).

The spelling of 1061806020 in words is "one billion, sixty-one million, eight hundred six thousand, twenty".