2168618673 has 8 divisors (see below), whose sum is σ = 3113914048. Its totient is φ = 1334534544.

The previous prime is 2168618633. The next prime is 2168618689. The reversal of 2168618673 is 3768168612.

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

It is not a de Polignac number, because 2168618673 - 2²² = 2164424369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168618623) 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, 27802765 + ... + 27802842.

It is an arithmetic number, because the mean of its divisors is an integer number (389239256).

Almost surely, 2^2168618673 is an apocalyptic number.

It is an amenable number.

2168618673 is a deficient number, since it is larger than the sum of its proper divisors (945295375).

2168618673 is a wasteful number, since it uses less digits than its factorization.

2168618673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55605623.

The product of its digits is 580608, while the sum is 48.

The square root of 2168618673 is about 46568.4300035979. The cubic root of 2168618673 is about 1294.3778256842.

The spelling of 2168618673 in words is "two billion, one hundred sixty-eight million, six hundred eighteen thousand, six hundred seventy-three".