1944635210028 has 144 divisors (see below), whose sum is σ = 5665502658816. Its totient is φ = 550902867840.

The previous prime is 1944635210017. The next prime is 1944635210029. The reversal of 1944635210028 is 8200125364491.

1944635210028 is a `hidden beast` number, since 1 + 9 + 4 + 4 + 635 + 2 + 1 + 0 + 0 + 2 + 8 = 666.

It is a super-2 number, since 2×1944635210028² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1944635210029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40019275 + ... + 40067837.

It is an arithmetic number, because the mean of its divisors is an integer number (39343768464).

Almost surely, 2^{1944635210028} is an apocalyptic number.

1944635210028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1944635210028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2832751329408).

1944635210028 is an abundant number, since it is smaller than the sum of its proper divisors (3720867448788).

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

1944635210028 is a wasteful number, since it uses less digits than its factorization.

1944635210028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49924 (or 49919 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 1944635210028 in words is "one trillion, nine hundred forty-four billion, six hundred thirty-five million, two hundred ten thousand, twenty-eight".