82003944638 has 32 divisors (see below), whose sum is σ = 153383044608. Its totient is φ = 31944376800.

The previous prime is 82003944623. The next prime is 82003944661. The reversal of 82003944638 is 83644930028.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 82003944592 and 82003944601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 981983 + ... + 1062213.

It is an arithmetic number, because the mean of its divisors is an integer number (4793220144).

Almost surely, 2^82003944638 is an apocalyptic number.

82003944638 is a deficient number, since it is larger than the sum of its proper divisors (71379099970).

82003944638 is a wasteful number, since it uses less digits than its factorization.

82003944638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86888.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 82003944638 in words is "eighty-two billion, three million, nine hundred forty-four thousand, six hundred thirty-eight".