3613736281 has 2 divisors, whose sum is σ = 3613736282. Its totient is φ = 3613736280.

The previous prime is 3613736279. The next prime is 3613736363. The reversal of 3613736281 is 1826373163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2283310656 + 1330425625 = 47784^2 + 36475^2 .

It is a cyclic number.

It is not a de Polignac number, because 3613736281 - 2¹ = 3613736279 is a prime.

It is a super-2 number, since 2×3613736281² = 26118179817231421922, which contains 22 as substring.

Together with 3613736279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3613736381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806868140 + 1806868141.

It is an arithmetic number, because the mean of its divisors is an integer number (1806868141).

Almost surely, 2^3613736281 is an apocalyptic number.

It is an amenable number.

3613736281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3613736281 is an equidigital number, since it uses as much as digits as its factorization.

3613736281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 3613736281 is about 60114.3600232091. The cubic root of 3613736281 is about 1534.5656947705.

The spelling of 3613736281 in words is "three billion, six hundred thirteen million, seven hundred thirty-six thousand, two hundred eighty-one".