8933918641 has 2 divisors, whose sum is σ = 8933918642. Its totient is φ = 8933918640.

The previous prime is 8933918639. The next prime is 8933918647. The reversal of 8933918641 is 1468193398.

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., 5721409600 + 3212509041 = 75640^2 + 56679^2 .

It is a cyclic number.

It is not a de Polignac number, because 8933918641 - 2¹ = 8933918639 is a prime.

Together with 8933918639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8933918647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4466959320 + 4466959321.

It is an arithmetic number, because the mean of its divisors is an integer number (4466959321).

Almost surely, 2^8933918641 is an apocalyptic number.

It is an amenable number.

8933918641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8933918641 is an equidigital number, since it uses as much as digits as its factorization.

8933918641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 52.

The square root of 8933918641 is about 94519.4088058109. The cubic root of 8933918641 is about 2074.9803949181.

The spelling of 8933918641 in words is "eight billion, nine hundred thirty-three million, nine hundred eighteen thousand, six hundred forty-one".