36009813 has 16 divisors (see below), whose sum is σ = 54956160. Its totient is φ = 20545536.

The previous prime is 36009811. The next prime is 36009829. The reversal of 36009813 is 31890063.

It is not a de Polignac number, because 36009813 - 2¹ = 36009811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36009811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24853 + ... + 26261.

It is an arithmetic number, because the mean of its divisors is an integer number (3434760).

Almost surely, 2^36009813 is an apocalyptic number.

It is an amenable number.

36009813 is a deficient number, since it is larger than the sum of its proper divisors (18946347).

36009813 is a wasteful number, since it uses less digits than its factorization.

36009813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 36009813 is about 6000.8176942813. The cubic root of 36009813 is about 330.2227238418. Note that the first 3 decimals are identical.

Adding to 36009813 its reverse (31890063), we get a palindrome (67899876).

The spelling of 36009813 in words is "thirty-six million, nine thousand, eight hundred thirteen".