2018091 has 8 divisors (see below), whose sum is σ = 2763664. Its totient is φ = 1308960.

The previous prime is 2018077. The next prime is 2018111. The reversal of 2018091 is 1908102.

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

It is not a de Polignac number, because 2018091 - 2⁷ = 2017963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2018021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8980 + ... + 9201.

It is an arithmetic number, because the mean of its divisors is an integer number (345458).

2^2018091 is an apocalyptic number.

2018091 is a deficient number, since it is larger than the sum of its proper divisors (745573).

2018091 is a wasteful number, since it uses less digits than its factorization.

2018091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18221.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2018091 is about 1420.5952977537. The cubic root of 2018091 is about 126.3708524831.

The spelling of 2018091 in words is "two million, eighteen thousand, ninety-one".