128863603 has 4 divisors (see below), whose sum is σ = 140578488. Its totient is φ = 117148720.

The previous prime is 128863589. The next prime is 128863633. The reversal of 128863603 is 306368821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306368821 = 11 ⋅27851711.

It is a cyclic number.

It is not a de Polignac number, because 128863603 - 2⁵ = 128863571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128863633) 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 3 ways as a sum of consecutive naturals, for example, 5857426 + ... + 5857447.

It is an arithmetic number, because the mean of its divisors is an integer number (35144622).

Almost surely, 2^128863603 is an apocalyptic number.

128863603 is a deficient number, since it is larger than the sum of its proper divisors (11714885).

128863603 is a wasteful number, since it uses less digits than its factorization.

128863603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11714884.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 128863603 is about 11351.8105604348. The cubic root of 128863603 is about 505.0992883886.

The spelling of 128863603 in words is "one hundred twenty-eight million, eight hundred sixty-three thousand, six hundred three".