641321219 has 8 divisors (see below), whose sum is σ = 799569408. Its totient is φ = 499730760.

The previous prime is 641321189. The next prime is 641321227. The reversal of 641321219 is 912123146.

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

It is a cyclic number.

It is not a de Polignac number, because 641321219 - 2¹² = 641317123 is a prime.

It is a super-2 number, since 2×641321219² = 822585811879291922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641321191 and 641321200.

It is not an unprimeable number, because it can be changed into a prime (641323219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4164347 + ... + 4164500.

It is an arithmetic number, because the mean of its divisors is an integer number (99946176).

Almost surely, 2^641321219 is an apocalyptic number.

641321219 is a deficient number, since it is larger than the sum of its proper divisors (158248189).

641321219 is a wasteful number, since it uses less digits than its factorization.

641321219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328865.

The product of its digits is 2592, while the sum is 29.

The square root of 641321219 is about 25324.3207016496. The cubic root of 641321219 is about 862.3664850811.

The spelling of 641321219 in words is "six hundred forty-one million, three hundred twenty-one thousand, two hundred nineteen".