128943167 has 16 divisors (see below), whose sum is σ = 135889152. Its totient is φ = 122204160.

The previous prime is 128943163. The next prime is 128943179. The reversal of 128943167 is 761349821.

It is a cyclic number.

It is not a de Polignac number, because 128943167 - 2² = 128943163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128943161) 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 15 ways as a sum of consecutive naturals, for example, 411803 + ... + 412115.

It is an arithmetic number, because the mean of its divisors is an integer number (8493072).

Almost surely, 2^128943167 is an apocalyptic number.

128943167 is a deficient number, since it is larger than the sum of its proper divisors (6945985).

128943167 is a wasteful number, since it uses less digits than its factorization.

128943167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its digits is 72576, while the sum is 41.

The square root of 128943167 is about 11355.3144826552. The cubic root of 128943167 is about 505.2032211533.

It can be divided in two parts, 12894 and 3167, that added together give a palindrome (16061).

The spelling of 128943167 in words is "one hundred twenty-eight million, nine hundred forty-three thousand, one hundred sixty-seven".