641324938 has 8 divisors (see below), whose sum is σ = 976345632. Its totient is φ = 315876396.

The previous prime is 641324921. The next prime is 641324947. The reversal of 641324938 is 839423146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×641324938² = 822595352201407688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641324938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2392870 + ... + 2393137.

It is an arithmetic number, because the mean of its divisors is an integer number (122043204).

Almost surely, 2^641324938 is an apocalyptic number.

641324938 is a deficient number, since it is larger than the sum of its proper divisors (335020694).

641324938 is a wasteful number, since it uses less digits than its factorization.

641324938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4786076.

The product of its digits is 124416, while the sum is 40.

The square root of 641324938 is about 25324.3941289816. The cubic root of 641324938 is about 862.3681520225.

The spelling of 641324938 in words is "six hundred forty-one million, three hundred twenty-four thousand, nine hundred thirty-eight".