7863156940 has 24 divisors (see below), whose sum is σ = 16521341760. Its totient is φ = 3143603328.

The previous prime is 7863156907. The next prime is 7863156949. The reversal of 7863156940 is 496513687.

It is not an unprimeable number, because it can be changed into a prime (7863156949) 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, 64500 + ... + 141019.

It is an arithmetic number, because the mean of its divisors is an integer number (688389240).

Almost surely, 2^7863156940 is an apocalyptic number.

It is an amenable number.

7863156940 is an abundant number, since it is smaller than the sum of its proper divisors (8658184820).

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

7863156940 is a wasteful number, since it uses less digits than its factorization.

7863156940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207441 (or 207439 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 7863156940 is about 88674.4435561904. The cubic root of 7863156940 is about 1988.5307657243.

The spelling of 7863156940 in words is "seven billion, eight hundred sixty-three million, one hundred fifty-six thousand, nine hundred forty".