44643818 has 16 divisors (see below), whose sum is σ = 69969960. Its totient is φ = 21336000.

The previous prime is 44643817. The next prime is 44643821. The reversal of 44643818 is 81834644.

It can be written as a sum of positive squares in 4 ways, for example, as 43864129 + 779689 = 6623^2 + 883^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44643811) 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, 2048 + ... + 9668.

Almost surely, 2^44643818 is an apocalyptic number.

44643818 is a deficient number, since it is larger than the sum of its proper divisors (25326142).

44643818 is a wasteful number, since it uses less digits than its factorization.

44643818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7753.

The product of its digits is 73728, while the sum is 38.

The square root of 44643818 is about 6681.6029513882. The cubic root of 44643818 is about 354.7483980630.

The spelling of 44643818 in words is "forty-four million, six hundred forty-three thousand, eight hundred eighteen".