2444463640 has 16 divisors (see below), whose sum is σ = 5500043280. Its totient is φ = 977785440.

The previous prime is 2444463617. The next prime is 2444463641. The reversal of 2444463640 is 463644442.

It is a self number, because there is not a number n which added to its sum of digits gives 2444463640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444463641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30555756 + ... + 30555835.

It is an arithmetic number, because the mean of its divisors is an integer number (343752705).

Almost surely, 2^2444463640 is an apocalyptic number.

2444463640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2444463640 is an abundant number, since it is smaller than the sum of its proper divisors (3055579640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2444463640 is a wasteful number, since it uses less digits than its factorization.

2444463640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61111602 (or 61111598 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 37.

The square root of 2444463640 is about 49441.5173715371. The cubic root of 2444463640 is about 1347.0835329488.

The spelling of 2444463640 in words is "two billion, four hundred forty-four million, four hundred sixty-three thousand, six hundred forty".