4413818644 has 6 divisors (see below), whose sum is σ = 7724182634. Its totient is φ = 2206909320.

The previous prime is 4413818639. The next prime is 4413818653. The reversal of 4413818644 is 4468183144.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3333907600 + 1079911044 = 57740^2 + 32862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4413818644.

It is a congruent number.

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, 551727327 + ... + 551727334.

Almost surely, 2^4413818644 is an apocalyptic number.

It is an amenable number.

4413818644 is a deficient number, since it is larger than the sum of its proper divisors (3310363990).

4413818644 is a wasteful number, since it uses less digits than its factorization.

4413818644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103454665 (or 1103454663 counting only the distinct ones).

The product of its digits is 294912, while the sum is 43.

The square root of 4413818644 is about 66436.5761008196. The cubic root of 4413818644 is about 1640.3561892413.

The spelling of 4413818644 in words is "four billion, four hundred thirteen million, eight hundred eighteen thousand, six hundred forty-four".