2040244081 has 2 divisors, whose sum is σ = 2040244082. Its totient is φ = 2040244080.

The previous prime is 2040244061. The next prime is 2040244133. The reversal of 2040244081 is 1804420402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1404750400 + 635493681 = 37480^2 + 25209^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040244081 - 2¹³ = 2040235889 is a prime.

It is a super-2 number, since 2×2040244081² = 8325191820111069122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2040244021) 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 as a sum of consecutive naturals, namely, 1020122040 + 1020122041.

It is an arithmetic number, because the mean of its divisors is an integer number (1020122041).

Almost surely, 2^2040244081 is an apocalyptic number.

It is an amenable number.

2040244081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040244081 is an equidigital number, since it uses as much as digits as its factorization.

2040244081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 2040244081 is about 45169.0611038131. The cubic root of 2040244081 is about 1268.3157206650.

Adding to 2040244081 its reverse (1804420402), we get a palindrome (3844664483).

The spelling of 2040244081 in words is "two billion, forty million, two hundred forty-four thousand, eighty-one".