3616115681 has 2 divisors, whose sum is σ = 3616115682. Its totient is φ = 3616115680.

The previous prime is 3616115669. The next prime is 3616115707. The reversal of 3616115681 is 1865116163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3010168225 + 605947456 = 54865^2 + 24616^2 .

It is a cyclic number.

It is not a de Polignac number, because 3616115681 - 2¹⁸ = 3615853537 is a prime.

It is a super-2 number, since 2×3616115681² = 26152585236748187522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3616115651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1808057840 + 1808057841.

It is an arithmetic number, because the mean of its divisors is an integer number (1808057841).

Almost surely, 2^3616115681 is an apocalyptic number.

It is an amenable number.

3616115681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3616115681 is an equidigital number, since it uses as much as digits as its factorization.

3616115681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 3616115681 is about 60134.1473790059. The cubic root of 3616115681 is about 1534.9024233192.

The spelling of 3616115681 in words is "three billion, six hundred sixteen million, one hundred fifteen thousand, six hundred eighty-one".