2194517317 has 2 divisors, whose sum is σ = 2194517318. Its totient is φ = 2194517316.

The previous prime is 2194517293. The next prime is 2194517327. The reversal of 2194517317 is 7137154912.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1809141156 + 385376161 = 42534^2 + 19631^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194517317 - 2⁷ = 2194517189 is a prime.

It is a super-2 number, since 2×2194517317² = 9631812509225756978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2194517317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2194517327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097258658 + 1097258659.

It is an arithmetic number, because the mean of its divisors is an integer number (1097258659).

Almost surely, 2^2194517317 is an apocalyptic number.

It is an amenable number.

2194517317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194517317 is an equidigital number, since it uses as much as digits as its factorization.

2194517317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 40.

The square root of 2194517317 is about 46845.6755421458. The cubic root of 2194517317 is about 1299.5101343671.

The spelling of 2194517317 in words is "two billion, one hundred ninety-four million, five hundred seventeen thousand, three hundred seventeen".