2036317561 has 2 divisors, whose sum is σ = 2036317562. Its totient is φ = 2036317560.

The previous prime is 2036317531. The next prime is 2036317649. The reversal of 2036317561 is 1657136302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1404750400 + 631567161 = 37480^2 + 25131^2 .

It is a cyclic number.

It is not a de Polignac number, because 2036317561 - 2⁵ = 2036317529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2036317501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1018158780 + 1018158781.

It is an arithmetic number, because the mean of its divisors is an integer number (1018158781).

Almost surely, 2^2036317561 is an apocalyptic number.

It is an amenable number.

2036317561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2036317561 is an equidigital number, since it uses as much as digits as its factorization.

2036317561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 2036317561 is about 45125.5754644747. The cubic root of 2036317561 is about 1267.5015590523.

The spelling of 2036317561 in words is "two billion, thirty-six million, three hundred seventeen thousand, five hundred sixty-one".