2192220649 has 2 divisors, whose sum is σ = 2192220650. Its totient is φ = 2192220648.

The previous prime is 2192220647. The next prime is 2192220727. The reversal of 2192220649 is 9460222912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1472103424 + 720117225 = 38368^2 + 26835^2 .

It is a cyclic number.

It is not a de Polignac number, because 2192220649 - 2¹ = 2192220647 is a prime.

Together with 2192220647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2192220647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096110324 + 1096110325.

It is an arithmetic number, because the mean of its divisors is an integer number (1096110325).

Almost surely, 2^2192220649 is an apocalyptic number.

It is an amenable number.

2192220649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2192220649 is an equidigital number, since it uses as much as digits as its factorization.

2192220649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 2192220649 is about 46821.1559981169. The cubic root of 2192220649 is about 1299.0566428286.

The spelling of 2192220649 in words is "two billion, one hundred ninety-two million, two hundred twenty thousand, six hundred forty-nine".