2018109793 has 4 divisors (see below), whose sum is σ = 2306411200. Its totient is φ = 1729808388.

The previous prime is 2018109791. The next prime is 2018109803. The reversal of 2018109793 is 3979018102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2018109793 - 2¹ = 2018109791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2018109791) 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, 144150693 + ... + 144150706.

It is an arithmetic number, because the mean of its divisors is an integer number (576602800).

Almost surely, 2^2018109793 is an apocalyptic number.

It is an amenable number.

2018109793 is a deficient number, since it is larger than the sum of its proper divisors (288301407).

2018109793 is an equidigital number, since it uses as much as digits as its factorization.

2018109793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288301406.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 2018109793 is about 44923.3769100231. The cubic root of 2018109793 is about 1263.7124474820.

The spelling of 2018109793 in words is "two billion, eighteen million, one hundred nine thousand, seven hundred ninety-three".