128854163 has 4 divisors (see below), whose sum is σ = 133297440. Its totient is φ = 124410888.

The previous prime is 128854153. The next prime is 128854247. The reversal of 128854163 is 361458821.

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 128854163 - 2¹² = 128850067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128854153) 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, 2221595 + ... + 2221652.

It is an arithmetic number, because the mean of its divisors is an integer number (33324360).

Almost surely, 2^128854163 is an apocalyptic number.

128854163 is a deficient number, since it is larger than the sum of its proper divisors (4443277).

128854163 is an equidigital number, since it uses as much as digits as its factorization.

128854163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443276.

The product of its digits is 46080, while the sum is 38.

The square root of 128854163 is about 11351.3947601165. The cubic root of 128854163 is about 505.0869542782.

The spelling of 128854163 in words is "one hundred twenty-eight million, eight hundred fifty-four thousand, one hundred sixty-three".