2090780641 has 2 divisors, whose sum is σ = 2090780642. Its totient is φ = 2090780640.

The previous prime is 2090780633. The next prime is 2090780669. The reversal of 2090780641 is 1460870902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1874543616 + 216237025 = 43296^2 + 14705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2090780641 - 2³ = 2090780633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2090780641.

It is not a weakly prime, because it can be changed into another prime (2090780621) 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, 1045390320 + 1045390321.

It is an arithmetic number, because the mean of its divisors is an integer number (1045390321).

Almost surely, 2^2090780641 is an apocalyptic number.

It is an amenable number.

2090780641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090780641 is an equidigital number, since it uses as much as digits as its factorization.

2090780641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2090780641 is about 45725.0548496117. The cubic root of 2090780641 is about 1278.7024287538.

The spelling of 2090780641 in words is "two billion, ninety million, seven hundred eighty thousand, six hundred forty-one".