7181617349 has 2 divisors, whose sum is σ = 7181617350. Its totient is φ = 7181617348.

The previous prime is 7181617327. The next prime is 7181617357. The reversal of 7181617349 is 9437161817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5841544900 + 1340072449 = 76430^2 + 36607^2 .

It is a cyclic number.

It is not a de Polignac number, because 7181617349 - 2²⁸ = 6913181893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7181617369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3590808674 + 3590808675.

It is an arithmetic number, because the mean of its divisors is an integer number (3590808675).

Almost surely, 2^7181617349 is an apocalyptic number.

It is an amenable number.

7181617349 is a deficient number, since it is larger than the sum of its proper divisors (1).

7181617349 is an equidigital number, since it uses as much as digits as its factorization.

7181617349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 47.

The square root of 7181617349 is about 84744.4237044539. The cubic root of 7181617349 is about 1929.3340117584.

The spelling of 7181617349 in words is "seven billion, one hundred eighty-one million, six hundred seventeen thousand, three hundred forty-nine".