2205169997 has 2 divisors, whose sum is σ = 2205169998. Its totient is φ = 2205169996.

The previous prime is 2205169991. The next prime is 2205170041. The reversal of 2205169997 is 7999615022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2130191716 + 74978281 = 46154^2 + 8659^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205169997 - 2¹⁸ = 2204907853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2205169991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102584998 + 1102584999.

It is an arithmetic number, because the mean of its divisors is an integer number (1102584999).

Almost surely, 2^2205169997 is an apocalyptic number.

It is an amenable number.

2205169997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205169997 is an equidigital number, since it uses as much as digits as its factorization.

2205169997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 2205169997 is about 46959.2376109323. The cubic root of 2205169997 is about 1301.6094458774.

The spelling of 2205169997 in words is "two billion, two hundred five million, one hundred sixty-nine thousand, nine hundred ninety-seven".