2081993513 has 2 divisors, whose sum is σ = 2081993514. Its totient is φ = 2081993512.

The previous prime is 2081993471. The next prime is 2081993527. The reversal of 2081993513 is 3153991802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1298665369 + 783328144 = 36037^2 + 27988^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081993513 - 2¹⁰ = 2081992489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2081993113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040996756 + 1040996757.

It is an arithmetic number, because the mean of its divisors is an integer number (1040996757).

Almost surely, 2^2081993513 is an apocalyptic number.

It is an amenable number.

2081993513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081993513 is an equidigital number, since it uses as much as digits as its factorization.

2081993513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 2081993513 is about 45628.8671018687. The cubic root of 2081993513 is about 1276.9085374195.

The spelling of 2081993513 in words is "two billion, eighty-one million, nine hundred ninety-three thousand, five hundred thirteen".