4918045681 has 2 divisors, whose sum is σ = 4918045682. Its totient is φ = 4918045680.

The previous prime is 4918045543. The next prime is 4918045721. The reversal of 4918045681 is 1865408194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4907703025 + 10342656 = 70055^2 + 3216^2 .

It is a cyclic number.

It is not a de Polignac number, because 4918045681 - 2¹⁹ = 4917521393 is a prime.

It is a super-2 number, since 2×4918045681² = 48374346640805507522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4918040681) 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, 2459022840 + 2459022841.

It is an arithmetic number, because the mean of its divisors is an integer number (2459022841).

Almost surely, 2^4918045681 is an apocalyptic number.

It is an amenable number.

4918045681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4918045681 is an equidigital number, since it uses as much as digits as its factorization.

4918045681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 4918045681 is about 70128.7792635805. The cubic root of 4918045681 is about 1700.5817710115.

The spelling of 4918045681 in words is "four billion, nine hundred eighteen million, forty-five thousand, six hundred eighty-one".