2091880562 has 6 divisors (see below), whose sum is σ = 3137917869. Its totient is φ = 1045907940.

The previous prime is 2091880561. The next prime is 2091880621. The reversal of 2091880562 is 2650881902.

It can be written as a sum of positive squares in 2 ways, for example, as 1676984401 + 414896161 = 40951^2 + 20369^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32341.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2091880561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 48512 + ... + 80852.

Almost surely, 2^2091880562 is an apocalyptic number.

2091880562 is a deficient number, since it is larger than the sum of its proper divisors (1046037307).

2091880562 is an frugal number, since it uses more digits than its factorization.

2091880562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64684 (or 32343 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 2091880562 is about 45737.0808207083. The cubic root of 2091880562 is about 1278.9266233376.

The spelling of 2091880562 in words is "two billion, ninety-one million, eight hundred eighty thousand, five hundred sixty-two".