2081208020 has 30 divisors (see below), whose sum is σ = 4414242210. Its totient is φ = 824240800.

The previous prime is 2081207993. The next prime is 2081208037. The reversal of 2081208020 is 208021802.

It can be written as a sum of positive squares in 5 ways, for example, as 881139856 + 1200068164 = 29684^2 + 34642^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20605970 + ... + 20606070.

It is an arithmetic number, because the mean of its divisors is an integer number (147141407).

Almost surely, 2^2081208020 is an apocalyptic number.

2081208020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081208020 is an abundant number, since it is smaller than the sum of its proper divisors (2333034190).

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

2081208020 is an frugal number, since it uses more digits than its factorization.

2081208020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 2081208020 is about 45620.2588769507. The cubic root of 2081208020 is about 1276.7479335119.

Adding to 2081208020 its reverse (208021802), we get a palindrome (2289229822).

The spelling of 2081208020 in words is "two billion, eighty-one million, two hundred eight thousand, twenty".