2444644413 has 24 divisors (see below), whose sum is σ = 3555552000. Its totient is φ = 1618539840.

The previous prime is 2444644399. The next prime is 2444644439. The reversal of 2444644413 is 3144464442.

2444644413 is a `hidden beast` number, since 2 + 4 + 4 + 4 + 644 + 4 + 1 + 3 = 666.

It is not a de Polignac number, because 2444644413 - 2⁸ = 2444644157 is a prime.

It is a super-2 number, since 2×2444644413² = 11952572612024229138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444644453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1000273 + ... + 1002713.

It is an arithmetic number, because the mean of its divisors is an integer number (148148000).

Almost surely, 2^2444644413 is an apocalyptic number.

It is an amenable number.

2444644413 is a deficient number, since it is larger than the sum of its proper divisors (1110907587).

2444644413 is a wasteful number, since it uses less digits than its factorization.

2444644413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169 (or 3166 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

The square root of 2444644413 is about 49443.3454875376. The cubic root of 2444644413 is about 1347.1167386420.

The spelling of 2444644413 in words is "two billion, four hundred forty-four million, six hundred forty-four thousand, four hundred thirteen".