2222786491 has 2 divisors, whose sum is σ = 2222786492. Its totient is φ = 2222786490.

The previous prime is 2222786483. The next prime is 2222786537. The reversal of 2222786491 is 1946872222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2222786491 - 2³ = 2222786483 is a prime.

It is not a weakly prime, because it can be changed into another prime (2222786411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111393245 + 1111393246.

It is an arithmetic number, because the mean of its divisors is an integer number (1111393246).

Almost surely, 2^2222786491 is an apocalyptic number.

2222786491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222786491 is an equidigital number, since it uses as much as digits as its factorization.

2222786491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 2222786491 is about 47146.4366734115. The cubic root of 2222786491 is about 1305.0663229212.

The spelling of 2222786491 in words is "two billion, two hundred twenty-two million, seven hundred eighty-six thousand, four hundred ninety-one".