2991326593 has 2 divisors, whose sum is σ = 2991326594. Its totient is φ = 2991326592.

The previous prime is 2991326551. The next prime is 2991326599. The reversal of 2991326593 is 3956231992.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1997374864 + 993951729 = 44692^2 + 31527^2 .

It is a cyclic number.

It is not a de Polignac number, because 2991326593 - 2⁹ = 2991326081 is a prime.

It is not a weakly prime, because it can be changed into another prime (2991326599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495663296 + 1495663297.

It is an arithmetic number, because the mean of its divisors is an integer number (1495663297).

Almost surely, 2^2991326593 is an apocalyptic number.

It is an amenable number.

2991326593 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991326593 is an equidigital number, since it uses as much as digits as its factorization.

2991326593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 787320, while the sum is 49.

The square root of 2991326593 is about 54693.0214286978. The cubic root of 2991326593 is about 1440.8583156184.

The spelling of 2991326593 in words is "two billion, nine hundred ninety-one million, three hundred twenty-six thousand, five hundred ninety-three".