641468041 has 2 divisors, whose sum is σ = 641468042. Its totient is φ = 641468040.

The previous prime is 641468033. The next prime is 641468057. The reversal of 641468041 is 140864146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 564537600 + 76930441 = 23760^2 + 8771^2 .

It is a cyclic number.

It is not a de Polignac number, because 641468041 - 2³ = 641468033 is a prime.

It is a super-2 number, since 2×641468041² = 822962495248755362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641467988 and 641468006.

It is not a weakly prime, because it can be changed into another prime (641468011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320734020 + 320734021.

It is an arithmetic number, because the mean of its divisors is an integer number (320734021).

Almost surely, 2^641468041 is an apocalyptic number.

It is an amenable number.

641468041 is a deficient number, since it is larger than the sum of its proper divisors (1).

641468041 is an equidigital number, since it uses as much as digits as its factorization.

641468041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 641468041 is about 25327.2193696821. The cubic root of 641468041 is about 862.4322891884.

The spelling of 641468041 in words is "six hundred forty-one million, four hundred sixty-eight thousand, forty-one".