4449218329538 has 4 divisors (see below), whose sum is σ = 6673827494310. Its totient is φ = 2224609164768.

The previous prime is 4449218329481. The next prime is 4449218329541. The reversal of 4449218329538 is 8359238129444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2446305580489 + 2002912749049 = 1564067^2 + 1415243^2 .

It is a super-2 number, since 2×4449218329538² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112304582383 + ... + 1112304582386.

Almost surely, 2^{4449218329538} is an apocalyptic number.

4449218329538 is a deficient number, since it is larger than the sum of its proper divisors (2224609164772).

4449218329538 is a wasteful number, since it uses less digits than its factorization.

4449218329538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224609164771.

The product of its digits is 59719680, while the sum is 62.

The spelling of 4449218329538 in words is "four trillion, four hundred forty-nine billion, two hundred eighteen million, three hundred twenty-nine thousand, five hundred thirty-eight".