1368368173 has 2 divisors, whose sum is σ = 1368368174. Its totient is φ = 1368368172.

The previous prime is 1368368149. The next prime is 1368368207. The reversal of 1368368173 is 3718638631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212293124 + 156075049 = 34818^2 + 12493^2 .

It is an emirp because it is prime and its reverse (3718638631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368368173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368368143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684184086 + 684184087.

It is an arithmetic number, because the mean of its divisors is an integer number (684184087).

Almost surely, 2^1368368173 is an apocalyptic number.

It is an amenable number.

1368368173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368368173 is an equidigital number, since it uses as much as digits as its factorization.

1368368173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 1368368173 is about 36991.4608119225. The cubic root of 1368368173 is about 1110.1993995592.

The spelling of 1368368173 in words is "one billion, three hundred sixty-eight million, three hundred sixty-eight thousand, one hundred seventy-three".