36361609 has 2 divisors, whose sum is σ = 36361610. Its totient is φ = 36361608.

The previous prime is 36361607. The next prime is 36361651. The reversal of 36361609 is 90616363.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31674384 + 4687225 = 5628^2 + 2165^2 .

It is an emirp because it is prime and its reverse (90616363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36361609 - 2¹ = 36361607 is a prime.

Together with 36361607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (36361601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18180804 + 18180805.

It is an arithmetic number, because the mean of its divisors is an integer number (18180805).

Almost surely, 2^36361609 is an apocalyptic number.

It is an amenable number.

36361609 is a deficient number, since it is larger than the sum of its proper divisors (1).

36361609 is an equidigital number, since it uses as much as digits as its factorization.

36361609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 36361609 is about 6030.0587890998. The cubic root of 36361609 is about 331.2946054090.

The spelling of 36361609 in words is "thirty-six million, three hundred sixty-one thousand, six hundred nine".