7857971963 has 4 divisors (see below), whose sum is σ = 7952646408. Its totient is φ = 7763297520.

The previous prime is 7857971887. The next prime is 7857972007. The reversal of 7857971963 is 3691797587.

7857971963 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7857971963 - 2⁸ = 7857971707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7857971896 and 7857971905.

It is not an unprimeable number, because it can be changed into a prime (7857970963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47337098 + ... + 47337263.

It is an arithmetic number, because the mean of its divisors is an integer number (1988161602).

Almost surely, 2^7857971963 is an apocalyptic number.

7857971963 is a deficient number, since it is larger than the sum of its proper divisors (94674445).

7857971963 is an equidigital number, since it uses as much as digits as its factorization.

7857971963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94674444.

The product of its digits is 20003760, while the sum is 62.

The square root of 7857971963 is about 88645.2027071967. The cubic root of 7857971963 is about 1988.0935896027.

The spelling of 7857971963 in words is "seven billion, eight hundred fifty-seven million, nine hundred seventy-one thousand, nine hundred sixty-three".