438220168324 has 27 divisors (see below), whose sum is σ = 775807406437. Its totient is φ = 216589918688.

The previous prime is 438220168319. The next prime is 438220168327. The reversal of 438220168324 is 423861022834.

The square root of 438220168324 is 661982.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 84147566724 + 354072601600 = 290082^2 + 595040^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438220168327) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 117830937 + ... + 117834655.

Almost surely, 2^438220168324 is an apocalyptic number.

438220168324 is the 661982-nd square number.

It is an amenable number.

438220168324 is a deficient number, since it is larger than the sum of its proper divisors (337587238113).

438220168324 is an frugal number, since it uses more digits than its factorization.

438220168324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7620 (or 3810 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 438220168324 in words is "four hundred thirty-eight billion, two hundred twenty million, one hundred sixty-eight thousand, three hundred twenty-four".