441918813 has 8 divisors (see below), whose sum is σ = 673400128. Its totient is φ = 252525024.

The previous prime is 441918781. The next prime is 441918889. The reversal of 441918813 is 318819144.

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

It is not a de Polignac number, because 441918813 - 2⁵ = 441918781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441918013) 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, 10521856 + ... + 10521897.

It is an arithmetic number, because the mean of its divisors is an integer number (84175016).

Almost surely, 2^441918813 is an apocalyptic number.

It is an amenable number.

441918813 is a deficient number, since it is larger than the sum of its proper divisors (231481315).

441918813 is a wasteful number, since it uses less digits than its factorization.

441918813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21043763.

The product of its digits is 27648, while the sum is 39.

The square root of 441918813 is about 21021.8651170632. The cubic root of 441918813 is about 761.6945183286.

It can be divided in two parts, 4419 and 18813, that added together give a palindrome (23232).

The spelling of 441918813 in words is "four hundred forty-one million, nine hundred eighteen thousand, eight hundred thirteen".