2173444481 has 8 divisors (see below), whose sum is σ = 2397721704. Its totient is φ = 1957322880.

The previous prime is 2173444477. The next prime is 2173444487. The reversal of 2173444481 is 1844443712.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 417834481 + 1755610000 = 20441^2 + 41900^2 .

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 2173444481 - 2² = 2173444477 is a prime.

It is a super-2 number, since 2×2173444481² = 9447721823978718722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173444487) 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, 2038346 + ... + 2039411.

It is an arithmetic number, because the mean of its divisors is an integer number (299715213).

Almost surely, 2^2173444481 is an apocalyptic number.

It is an amenable number.

2173444481 is a deficient number, since it is larger than the sum of its proper divisors (224277223).

2173444481 is a wasteful number, since it uses less digits than its factorization.

2173444481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077811.

The product of its digits is 86016, while the sum is 38.

The square root of 2173444481 is about 46620.2153684429. The cubic root of 2173444481 is about 1295.3372368978.

The spelling of 2173444481 in words is "two billion, one hundred seventy-three million, four hundred forty-four thousand, four hundred eighty-one".