128957167 has 2 divisors, whose sum is σ = 128957168. Its totient is φ = 128957166.

The previous prime is 128957119. The next prime is 128957207. The reversal of 128957167 is 761759821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (761759821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128957167 - 2⁷ = 128957039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128957107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64478583 + 64478584.

It is an arithmetic number, because the mean of its divisors is an integer number (64478584).

Almost surely, 2^128957167 is an apocalyptic number.

128957167 is a deficient number, since it is larger than the sum of its proper divisors (1).

128957167 is an equidigital number, since it uses as much as digits as its factorization.

128957167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 46.

The square root of 128957167 is about 11355.9309173665. The cubic root of 128957167 is about 505.2215046325.

The spelling of 128957167 in words is "one hundred twenty-eight million, nine hundred fifty-seven thousand, one hundred sixty-seven".