2805995993 has 2 divisors, whose sum is σ = 2805995994. Its totient is φ = 2805995992.

The previous prime is 2805995989. The next prime is 2805996029. The reversal of 2805995993 is 3995995082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2710972489 + 95023504 = 52067^2 + 9748^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805995993 - 2² = 2805995989 is a prime.

It is a super-2 number, since 2×2805995993² = 15747227025464112098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2805995963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402997996 + 1402997997.

It is an arithmetic number, because the mean of its divisors is an integer number (1402997997).

Almost surely, 2^2805995993 is an apocalyptic number.

It is an amenable number.

2805995993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805995993 is an equidigital number, since it uses as much as digits as its factorization.

2805995993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7873200, while the sum is 59.

The square root of 2805995993 is about 52971.6527304935. The cubic root of 2805995993 is about 1410.4651137301.

The spelling of 2805995993 in words is "two billion, eight hundred five million, nine hundred ninety-five thousand, nine hundred ninety-three".