128472163 has 2 divisors, whose sum is σ = 128472164. Its totient is φ = 128472162.

The previous prime is 128472143. The next prime is 128472191. The reversal of 128472163 is 361274821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128472163 is a prime.

It is not a weakly prime, because it can be changed into another prime (128472133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64236081 + 64236082.

It is an arithmetic number, because the mean of its divisors is an integer number (64236082).

Almost surely, 2^128472163 is an apocalyptic number.

128472163 is a deficient number, since it is larger than the sum of its proper divisors (1).

128472163 is an equidigital number, since it uses as much as digits as its factorization.

128472163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 128472163 is about 11334.5561448166. The cubic root of 128472163 is about 504.5873346755.

The spelling of 128472163 in words is "one hundred twenty-eight million, four hundred seventy-two thousand, one hundred sixty-three".