136836818 has 4 divisors (see below), whose sum is σ = 205255230. Its totient is φ = 68418408.

The previous prime is 136836797. The next prime is 136836827. The reversal of 136836818 is 818638631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818638631 = 149 ⋅5494219.

It can be written as a sum of positive squares in only one way, i.e., 124255609 + 12581209 = 11147^2 + 3547^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34209203 + ... + 34209206.

Almost surely, 2^136836818 is an apocalyptic number.

136836818 is a deficient number, since it is larger than the sum of its proper divisors (68418412).

136836818 is an equidigital number, since it uses as much as digits as its factorization.

136836818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68418411.

The product of its digits is 165888, while the sum is 44.

The square root of 136836818 is about 11697.7270441740. The cubic root of 136836818 is about 515.3089144865.

The spelling of 136836818 in words is "one hundred thirty-six million, eight hundred thirty-six thousand, eight hundred eighteen".