36813641 has 4 divisors (see below), whose sum is σ = 37508292. Its totient is φ = 36118992.

The previous prime is 36813629. The next prime is 36813691. The reversal of 36813641 is 14631863.

36813641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14631863 = 29 ⋅504547.

It can be written as a sum of positive squares in 2 ways, for example, as 30913600 + 5900041 = 5560^2 + 2429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36813641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36813598 and 36813607.

It is not an unprimeable number, because it can be changed into a prime (36813611) 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, 347246 + ... + 347351.

It is an arithmetic number, because the mean of its divisors is an integer number (9377073).

Almost surely, 2^36813641 is an apocalyptic number.

It is an amenable number.

36813641 is a deficient number, since it is larger than the sum of its proper divisors (694651).

36813641 is an equidigital number, since it uses as much as digits as its factorization.

36813641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694650.

The product of its digits is 10368, while the sum is 32.

The square root of 36813641 is about 6067.4245771991. The cubic root of 36813641 is about 332.6617932324.

The spelling of 36813641 in words is "thirty-six million, eight hundred thirteen thousand, six hundred forty-one".