1368224185 has 4 divisors (see below), whose sum is σ = 1641869028. Its totient is φ = 1094579344.

The previous prime is 1368224171. The next prime is 1368224189. The reversal of 1368224185 is 5814228631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5814228631 = 53 ⋅109702427.

It can be written as a sum of positive squares in 2 ways, for example, as 660078864 + 708145321 = 25692^2 + 26611^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368224185 - 2⁷ = 1368224057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368224189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136822414 + ... + 136822423.

It is an arithmetic number, because the mean of its divisors is an integer number (410467257).

Almost surely, 2^1368224185 is an apocalyptic number.

It is an amenable number.

1368224185 is a deficient number, since it is larger than the sum of its proper divisors (273644843).

1368224185 is an equidigital number, since it uses as much as digits as its factorization.

1368224185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273644842.

The product of its digits is 92160, while the sum is 40.

The square root of 1368224185 is about 36989.5145277685. The cubic root of 1368224185 is about 1110.1604575547.

The spelling of 1368224185 in words is "one billion, three hundred sixty-eight million, two hundred twenty-four thousand, one hundred eighty-five".