7963898866 has 24 divisors (see below), whose sum is σ = 15006358080. Its totient is φ = 3102817080.

The previous prime is 7963898861. The next prime is 7963898867. The reversal of 7963898866 is 6688983697.

It is a junction number, because it is equal to n+sod(n) for n = 7963898795 and 7963898804.

It is not an unprimeable number, because it can be changed into a prime (7963898861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2348926 + ... + 2352313.

It is an arithmetic number, because the mean of its divisors is an integer number (625264920).

Almost surely, 2^7963898866 is an apocalyptic number.

7963898866 is a deficient number, since it is larger than the sum of its proper divisors (7042459214).

7963898866 is a wasteful number, since it uses less digits than its factorization.

7963898866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701270 (or 4701259 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 70.

The square root of 7963898866 is about 89240.6794348855. The cubic root of 7963898866 is about 1996.9870354683.

The spelling of 7963898866 in words is "seven billion, nine hundred sixty-three million, eight hundred ninety-eight thousand, eight hundred sixty-six".