4421147818 has 8 divisors (see below), whose sum is σ = 6634958148. Its totient is φ = 2209495104.

The previous prime is 4421147767. The next prime is 4421147851. The reversal of 4421147818 is 8187411244.

It can be written as a sum of positive squares in 2 ways, for example, as 4141823449 + 279324369 = 64357^2 + 16713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4421147818² = 39093096057212322248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534271 + ... + 542482.

Almost surely, 2^4421147818 is an apocalyptic number.

4421147818 is a deficient number, since it is larger than the sum of its proper divisors (2213810330).

4421147818 is a wasteful number, since it uses less digits than its factorization.

4421147818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078808.

The product of its digits is 57344, while the sum is 40.

The square root of 4421147818 is about 66491.7124008699. The cubic root of 4421147818 is about 1641.2636277943.

It can be divided in two parts, 44211 and 47818, that added together give a palindrome (92029).

The spelling of 4421147818 in words is "four billion, four hundred twenty-one million, one hundred forty-seven thousand, eight hundred eighteen".