2291327993 has 2 divisors, whose sum is σ = 2291327994. Its totient is φ = 2291327992.

The previous prime is 2291327981. The next prime is 2291328043. The reversal of 2291327993 is 3997231922.

2291327993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1345642489 + 945685504 = 36683^2 + 30752^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291327993 - 2¹² = 2291323897 is a prime.

It is not a weakly prime, because it can be changed into another prime (2291327293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145663996 + 1145663997.

It is an arithmetic number, because the mean of its divisors is an integer number (1145663997).

Almost surely, 2^2291327993 is an apocalyptic number.

It is an amenable number.

2291327993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291327993 is an equidigital number, since it uses as much as digits as its factorization.

2291327993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 2291327993 is about 47867.8179260346. The cubic root of 2291327993 is about 1318.3450320274.

The spelling of 2291327993 in words is "two billion, two hundred ninety-one million, three hundred twenty-seven thousand, nine hundred ninety-three".