7982643653 has 8 divisors (see below), whose sum is σ = 8005948800. Its totient is φ = 7959365568.

The previous prime is 7982643593. The next prime is 7982643661. The reversal of 7982643653 is 3563462897.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7982643653 - 2⁶ = 7982643589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7982643595 and 7982643604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7982643673) 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, 683618 + ... + 695196.

It is an arithmetic number, because the mean of its divisors is an integer number (1000743600).

Almost surely, 2^7982643653 is an apocalyptic number.

It is an amenable number.

7982643653 is a deficient number, since it is larger than the sum of its proper divisors (23305147).

7982643653 is a wasteful number, since it uses less digits than its factorization.

7982643653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13531.

The product of its digits is 6531840, while the sum is 53.

The square root of 7982643653 is about 89345.6414885472. The cubic root of 7982643653 is about 1998.5525905056.

The spelling of 7982643653 in words is "seven billion, nine hundred eighty-two million, six hundred forty-three thousand, six hundred fifty-three".