2205917797 has 2 divisors, whose sum is σ = 2205917798. Its totient is φ = 2205917796.

The previous prime is 2205917743. The next prime is 2205917801. The reversal of 2205917797 is 7977195022.

2205917797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1694886561 + 511031236 = 41169^2 + 22606^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205917797 - 2³¹ = 58434149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2205917797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2205911797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102958898 + 1102958899.

It is an arithmetic number, because the mean of its divisors is an integer number (1102958899).

Almost surely, 2^2205917797 is an apocalyptic number.

It is an amenable number.

2205917797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205917797 is an equidigital number, since it uses as much as digits as its factorization.

2205917797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 555660, while the sum is 49.

The square root of 2205917797 is about 46967.1991606909. The cubic root of 2205917797 is about 1301.7565597872.

The spelling of 2205917797 in words is "two billion, two hundred five million, nine hundred seventeen thousand, seven hundred ninety-seven".