8728163971 has 2 divisors, whose sum is σ = 8728163972. Its totient is φ = 8728163970.

The previous prime is 8728163963. The next prime is 8728164023. The reversal of 8728163971 is 1793618278.

8728163971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (8728164023) can be obtained adding 8728163971 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8728163971 - 2³ = 8728163963 is a prime.

It is not a weakly prime, because it can be changed into another prime (8728163911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364081985 + 4364081986.

It is an arithmetic number, because the mean of its divisors is an integer number (4364081986).

Almost surely, 2^8728163971 is an apocalyptic number.

8728163971 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728163971 is an equidigital number, since it uses as much as digits as its factorization.

8728163971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 52.

The square root of 8728163971 is about 93424.6432746735. The cubic root of 8728163971 is about 2058.9270790579.

The spelling of 8728163971 in words is "eight billion, seven hundred twenty-eight million, one hundred sixty-three thousand, nine hundred seventy-one".