641532219 has 16 divisors (see below), whose sum is σ = 867801600. Its totient is φ = 421495776.

The previous prime is 641532217. The next prime is 641532223. The reversal of 641532219 is 912235146.

It is not a de Polignac number, because 641532219 - 2¹ = 641532217 is a prime.

It is a super-2 number, since 2×641532219² = 823127176030127922, 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 641532219.

It is not an unprimeable number, because it can be changed into a prime (641532217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144517 + ... + 148889.

It is an arithmetic number, because the mean of its divisors is an integer number (54237600).

Almost surely, 2^641532219 is an apocalyptic number.

641532219 is a deficient number, since it is larger than the sum of its proper divisors (226269381).

641532219 is a wasteful number, since it uses less digits than its factorization.

641532219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5074.

The product of its digits is 12960, while the sum is 33.

The square root of 641532219 is about 25328.4863148195. The cubic root of 641532219 is about 862.4610499529.

The spelling of 641532219 in words is "six hundred forty-one million, five hundred thirty-two thousand, two hundred nineteen".