2218246091 has 2 divisors, whose sum is σ = 2218246092. Its totient is φ = 2218246090.

The previous prime is 2218246087. The next prime is 2218246097. The reversal of 2218246091 is 1906428122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2218246091 - 2² = 2218246087 is a prime.

It is not a weakly prime, because it can be changed into another prime (2218246097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109123045 + 1109123046.

It is an arithmetic number, because the mean of its divisors is an integer number (1109123046).

Almost surely, 2^2218246091 is an apocalyptic number.

2218246091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218246091 is an equidigital number, since it uses as much as digits as its factorization.

2218246091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 2218246091 is about 47098.2599572426. The cubic root of 2218246091 is about 1304.1771143604.

The spelling of 2218246091 in words is "two billion, two hundred eighteen million, two hundred forty-six thousand, ninety-one".