1365836213 has 4 divisors (see below), whose sum is σ = 1560955680. Its totient is φ = 1170716748.

The previous prime is 1365836207. The next prime is 1365836237. The reversal of 1365836213 is 3126385631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3126385631 = 229 ⋅13652339.

It is a cyclic number.

It is not a de Polignac number, because 1365836213 - 2⁶ = 1365836149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365836203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97559723 + ... + 97559736.

It is an arithmetic number, because the mean of its divisors is an integer number (390238920).

Almost surely, 2^1365836213 is an apocalyptic number.

It is an amenable number.

1365836213 is a deficient number, since it is larger than the sum of its proper divisors (195119467).

1365836213 is an equidigital number, since it uses as much as digits as its factorization.

1365836213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195119466.

The product of its digits is 77760, while the sum is 38.

The square root of 1365836213 is about 36957.2213917659. The cubic root of 1365836213 is about 1109.5142243075.

The spelling of 1365836213 in words is "one billion, three hundred sixty-five million, eight hundred thirty-six thousand, two hundred thirteen".