7822940646 has 32 divisors (see below), whose sum is σ = 16192431360. Its totient is φ = 2516633504.

The previous prime is 7822940627. The next prime is 7822940647. The reversal of 7822940646 is 6460492287.

It is a super-2 number, since 2×7822940646² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7822940595 and 7822940604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7822940647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454921 + ... + 471803.

It is an arithmetic number, because the mean of its divisors is an integer number (506013480).

Almost surely, 2^7822940646 is an apocalyptic number.

7822940646 is an abundant number, since it is smaller than the sum of its proper divisors (8369490714).

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

7822940646 is a wasteful number, since it uses less digits than its factorization.

7822940646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19580.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 7822940646 is about 88447.3891417943. The cubic root of 7822940646 is about 1985.1348410918.

The spelling of 7822940646 in words is "seven billion, eight hundred twenty-two million, nine hundred forty thousand, six hundred forty-six".