2216626949 has 2 divisors, whose sum is σ = 2216626950. Its totient is φ = 2216626948.

The previous prime is 2216626813. The next prime is 2216626987. The reversal of 2216626949 is 9496266122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1991836900 + 224790049 = 44630^2 + 14993^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216626949 - 2⁸ = 2216626693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216616949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108313474 + 1108313475.

It is an arithmetic number, because the mean of its divisors is an integer number (1108313475).

Almost surely, 2^2216626949 is an apocalyptic number.

It is an amenable number.

2216626949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216626949 is an equidigital number, since it uses as much as digits as its factorization.

2216626949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The square root of 2216626949 is about 47081.0678404813. The cubic root of 2216626949 is about 1303.8597221744.

The spelling of 2216626949 in words is "two billion, two hundred sixteen million, six hundred twenty-six thousand, nine hundred forty-nine".