641042384 has 40 divisors (see below), whose sum is σ = 1298696640. Its totient is φ = 305952768.

The previous prime is 641042383. The next prime is 641042429. The reversal of 641042384 is 483240146.

It is a self number, because there is not a number n which added to its sum of digits gives 641042384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641042383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210827 + ... + 213845.

It is an arithmetic number, because the mean of its divisors is an integer number (32467416).

Almost surely, 2^641042384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641042384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649348320).

641042384 is an abundant number, since it is smaller than the sum of its proper divisors (657654256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641042384 is a wasteful number, since it uses less digits than its factorization.

641042384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 641042384 is about 25318.8148221831. The cubic root of 641042384 is about 862.2414864537.

The spelling of 641042384 in words is "six hundred forty-one million, forty-two thousand, three hundred eighty-four".