2018361 has 4 divisors (see below), whose sum is σ = 2691152. Its totient is φ = 1345572.

The previous prime is 2018333. The next prime is 2018369. The reversal of 2018361 is 1638102.

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 2018361 - 2¹⁴ = 2001977 is a prime.

It is a super-2 number, since 2×2018361² = 8147562252642, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2018369) 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, 336391 + ... + 336396.

It is an arithmetic number, because the mean of its divisors is an integer number (672788).

2^2018361 is an apocalyptic number.

It is an amenable number.

2018361 is a deficient number, since it is larger than the sum of its proper divisors (672791).

2018361 is an equidigital number, since it uses as much as digits as its factorization.

2018361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672790.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2018361 is about 1420.6903251589. The cubic root of 2018361 is about 126.3764879423.

It can be divided in two parts, 20 and 18361, that added together give a palindrome (18381).

The spelling of 2018361 in words is "two million, eighteen thousand, three hundred sixty-one".