128995163 has 8 divisors (see below), whose sum is σ = 143377776. Its totient is φ = 115055200.

The previous prime is 128995157. The next prime is 128995169. The reversal of 128995163 is 361599821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128995157) and next prime (128995169).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128995163 - 2⁴ = 128995147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128995169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110048 + ... + 111213.

It is an arithmetic number, because the mean of its divisors is an integer number (17922222).

Almost surely, 2^128995163 is an apocalyptic number.

128995163 is a deficient number, since it is larger than the sum of its proper divisors (14382613).

128995163 is a wasteful number, since it uses less digits than its factorization.

128995163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221325.

The product of its digits is 116640, while the sum is 44.

The square root of 128995163 is about 11357.6037525527. The cubic root of 128995163 is about 505.2711193268.

The spelling of 128995163 in words is "one hundred twenty-eight million, nine hundred ninety-five thousand, one hundred sixty-three".