641103539 has 2 divisors, whose sum is σ = 641103540. Its totient is φ = 641103538.

The previous prime is 641103497. The next prime is 641103557. The reversal of 641103539 is 935301146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 641103539 - 2⁸ = 641103283 is a prime.

It is a super-2 number, since 2×641103539² = 822027495436649042, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (641106539) 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, 320551769 + 320551770.

It is an arithmetic number, because the mean of its divisors is an integer number (320551770).

Almost surely, 2^641103539 is an apocalyptic number.

641103539 is a deficient number, since it is larger than the sum of its proper divisors (1).

641103539 is an equidigital number, since it uses as much as digits as its factorization.

641103539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 641103539 is about 25320.0224920911. The cubic root of 641103539 is about 862.2689046623.

The spelling of 641103539 in words is "six hundred forty-one million, one hundred three thousand, five hundred thirty-nine".