4178128863 has 4 divisors (see below), whose sum is σ = 5570838488. Its totient is φ = 2785419240.

The previous prime is 4178128847. The next prime is 4178128883. The reversal of 4178128863 is 3688218714.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4178128863 - 2⁴ = 4178128847 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 (4178128883) 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, 696354808 + ... + 696354813.

It is an arithmetic number, because the mean of its divisors is an integer number (1392709622).

Almost surely, 2^4178128863 is an apocalyptic number.

4178128863 is a deficient number, since it is larger than the sum of its proper divisors (1392709625).

4178128863 is a wasteful number, since it uses less digits than its factorization.

4178128863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392709624.

The product of its digits is 516096, while the sum is 48.

The square root of 4178128863 is about 64638.4472508429. The cubic root of 4178128863 is about 1610.6231738807.

The spelling of 4178128863 in words is "four billion, one hundred seventy-eight million, one hundred twenty-eight thousand, eight hundred sixty-three".