438122221834 has 16 divisors (see below), whose sum is σ = 759099465216. Its totient is φ = 187431966400.

The previous prime is 438122221829. The next prime is 438122221837.

438122221834 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (438122221837) 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, 585724522 + ... + 585725269.

It is an arithmetic number, because the mean of its divisors is an integer number (47443716576).

Almost surely, 2^438122221834 is an apocalyptic number.

438122221834 is a deficient number, since it is larger than the sum of its proper divisors (320977243382).

438122221834 is a wasteful number, since it uses less digits than its factorization.

438122221834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171449821.

The product of its digits is 147456, while the sum is 40.

It can be divided in two parts, 438122 and 221834, that added together give a palindrome (659956).

The spelling of 438122221834 in words is "four hundred thirty-eight billion, one hundred twenty-two million, two hundred twenty-one thousand, eight hundred thirty-four".