7963867386 has 24 divisors (see below), whose sum is σ = 17271986004. Its totient is φ = 2652016320.

The previous prime is 7963867381. The next prime is 7963867421. The reversal of 7963867386 is 6837683697.

It can be written as a sum of positive squares in 2 ways, for example, as 7904099025 + 59768361 = 88905^2 + 7731^2 .

It is not an unprimeable number, because it can be changed into a prime (7963867381) 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, 198291 + ... + 235046.

Almost surely, 2^7963867386 is an apocalyptic number.

7963867386 is an abundant number, since it is smaller than the sum of its proper divisors (9308118618).

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

7963867386 is a wasteful number, since it uses less digits than its factorization.

7963867386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434366 (or 434363 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The square root of 7963867386 is about 89240.5030577484. The cubic root of 7963867386 is about 1996.9844042096.

The spelling of 7963867386 in words is "seven billion, nine hundred sixty-three million, eight hundred sixty-seven thousand, three hundred eighty-six".