7863163240 has 32 divisors (see below), whose sum is σ = 18302193000. Its totient is φ = 3036807424.

The previous prime is 7863163219. The next prime is 7863163241. The reversal of 7863163240 is 423613687.

It can be written as a sum of positive squares in 4 ways, for example, as 7396344004 + 466819236 = 86002^2 + 21606^2 .

It is a super-2 number, since 2×7863163240² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 7863163193 and 7863163202.

It is not an unprimeable number, because it can be changed into a prime (7863163241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3388135 + ... + 3390454.

Almost surely, 2^7863163240 is an apocalyptic number.

It is an amenable number.

7863163240 is an abundant number, since it is smaller than the sum of its proper divisors (10439029760).

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

7863163240 is a wasteful number, since it uses less digits than its factorization.

7863163240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778629 (or 6778625 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 7863163240 is about 88674.4790793834. The cubic root of 7863163240 is about 1988.5312967977.

The spelling of 7863163240 in words is "seven billion, eight hundred sixty-three million, one hundred sixty-three thousand, two hundred forty".