641043238 has 24 divisors (see below), whose sum is σ = 1071841680. Its totient is φ = 287271600.

The previous prime is 641043229. The next prime is 641043239. The reversal of 641043238 is 832340146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641043239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1473 + ... + 35836.

It is an arithmetic number, because the mean of its divisors is an integer number (44660070).

Almost surely, 2^641043238 is an apocalyptic number.

641043238 is a deficient number, since it is larger than the sum of its proper divisors (430798442).

641043238 is a wasteful number, since it uses less digits than its factorization.

641043238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37404 (or 37393 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 641043238 is about 25318.8316871059. The cubic root of 641043238 is about 862.2418693477.

The spelling of 641043238 in words is "six hundred forty-one million, forty-three thousand, two hundred thirty-eight".