2128633917 has 8 divisors (see below), whose sum is σ = 2838556224. Its totient is φ = 1418900448.

The previous prime is 2128633909. The next prime is 2128633931. The reversal of 2128633917 is 7193368212.

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

It is not a de Polignac number, because 2128633917 - 2³ = 2128633909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128633957) 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, 18393 + ... + 67790.

It is an arithmetic number, because the mean of its divisors is an integer number (354819528).

Almost surely, 2^2128633917 is an apocalyptic number.

It is an amenable number.

2128633917 is a deficient number, since it is larger than the sum of its proper divisors (709922307).

2128633917 is an equidigital number, since it uses as much as digits as its factorization.

2128633917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94419.

The product of its digits is 108864, while the sum is 42.

The square root of 2128633917 is about 46137.1208139390. The cubic root of 2128633917 is about 1286.3732269145.

The spelling of 2128633917 in words is "two billion, one hundred twenty-eight million, six hundred thirty-three thousand, nine hundred seventeen".