7943418646 has 16 divisors (see below), whose sum is σ = 12018910176. Its totient is φ = 3937196736.

The previous prime is 7943418643. The next prime is 7943418649. The reversal of 7943418646 is 6468143497.

7943418646 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7943418643) and next prime (7943418649).

It is a junction number, because it is equal to n+sod(n) for n = 7943418593 and 7943418602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7943418643) 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, 179260 + ... + 219136.

It is an arithmetic number, because the mean of its divisors is an integer number (751181886).

Almost surely, 2^7943418646 is an apocalyptic number.

7943418646 is a deficient number, since it is larger than the sum of its proper divisors (4075491530).

7943418646 is a wasteful number, since it uses less digits than its factorization.

7943418646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40743.

The product of its digits is 3483648, while the sum is 52.

The square root of 7943418646 is about 89125.8584586987. The cubic root of 7943418646 is about 1995.2737271369.

The spelling of 7943418646 in words is "seven billion, nine hundred forty-three million, four hundred eighteen thousand, six hundred forty-six".