44681818 has 4 divisors (see below), whose sum is σ = 67022730. Its totient is φ = 22340908.

The previous prime is 44681803. The next prime is 44681839. The reversal of 44681818 is 81818644.

It is a happy number.

44681818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 40284409 + 4397409 = 6347^2 + 2097^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11170453 + ... + 11170456.

Almost surely, 2^44681818 is an apocalyptic number.

44681818 is a deficient number, since it is larger than the sum of its proper divisors (22340912).

44681818 is a wasteful number, since it uses less digits than its factorization.

44681818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22340911.

The product of its digits is 49152, while the sum is 40.

The square root of 44681818 is about 6684.4459755465. The cubic root of 44681818 is about 354.8490212980.

It can be divided in two parts, 44 and 681818, that multiplied together give a palindrome (29999992).

The spelling of 44681818 in words is "forty-four million, six hundred eighty-one thousand, eight hundred eighteen".