2097218579 has 2 divisors, whose sum is σ = 2097218580. Its totient is φ = 2097218578.

The previous prime is 2097218567. The next prime is 2097218597. The reversal of 2097218579 is 9758127902.

Together with next prime (2097218597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2097218579 is a prime.

It is not a weakly prime, because it can be changed into another prime (2097218509) 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, 1048609289 + 1048609290.

It is an arithmetic number, because the mean of its divisors is an integer number (1048609290).

Almost surely, 2^2097218579 is an apocalyptic number.

2097218579 is a deficient number, since it is larger than the sum of its proper divisors (1).

2097218579 is an equidigital number, since it uses as much as digits as its factorization.

2097218579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 2097218579 is about 45795.3991029667. The cubic root of 2097218579 is about 1280.0135453889.

The spelling of 2097218579 in words is "two billion, ninety-seven million, two hundred eighteen thousand, five hundred seventy-nine".