136818485 has 4 divisors (see below), whose sum is σ = 164182188. Its totient is φ = 109454784.

The previous prime is 136818481. The next prime is 136818503. The reversal of 136818485 is 584818631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584818631 = 23 ⋅25426897.

It can be written as a sum of positive squares in 2 ways, for example, as 78464164 + 58354321 = 8858^2 + 7639^2 .

It is a cyclic number.

It is not a de Polignac number, because 136818485 - 2² = 136818481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136818481) 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, 13681844 + ... + 13681853.

It is an arithmetic number, because the mean of its divisors is an integer number (41045547).

Almost surely, 2^136818485 is an apocalyptic number.

It is an amenable number.

136818485 is a deficient number, since it is larger than the sum of its proper divisors (27363703).

136818485 is an equidigital number, since it uses as much as digits as its factorization.

136818485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27363702.

The product of its digits is 184320, while the sum is 44.

The square root of 136818485 is about 11696.9434041548. The cubic root of 136818485 is about 515.2859002607.

The spelling of 136818485 in words is "one hundred thirty-six million, eight hundred eighteen thousand, four hundred eighty-five".