641539852 has 12 divisors (see below), whose sum is σ = 1129418640. Its totient is φ = 318848816.

The previous prime is 641539783. The next prime is 641539853. The reversal of 641539852 is 258935146.

641539852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 641539799 and 641539808.

It is not an unprimeable number, because it can be changed into a prime (641539853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479527 + ... + 480862.

It is an arithmetic number, because the mean of its divisors is an integer number (94118220).

Almost surely, 2^641539852 is an apocalyptic number.

It is an amenable number.

641539852 is a deficient number, since it is larger than the sum of its proper divisors (487878788).

641539852 is a wasteful number, since it uses less digits than its factorization.

641539852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960560 (or 960558 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 641539852 is about 25328.6369945167. The cubic root of 641539852 is about 862.4644704821.

The spelling of 641539852 in words is "six hundred forty-one million, five hundred thirty-nine thousand, eight hundred fifty-two".