2118361 has 8 divisors (see below), whose sum is σ = 2486720. Its totient is φ = 1766448.

The previous prime is 2118359. The next prime is 2118371. The reversal of 2118361 is 1638112.

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

It is a cyclic number.

It is not a de Polignac number, because 2118361 - 2¹ = 2118359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2118301) 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, 3831 + ... + 4348.

It is an arithmetic number, because the mean of its divisors is an integer number (310840).

2^2118361 is an apocalyptic number.

It is an amenable number.

2118361 is a deficient number, since it is larger than the sum of its proper divisors (368359).

2118361 is an equidigital number, since it uses as much as digits as its factorization.

2118361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223.

The product of its digits is 288, while the sum is 22.

The square root of 2118361 is about 1455.4590341195. The cubic root of 2118361 is about 128.4300517128.

Subtracting from 2118361 its reverse (1638112), we obtain a square (480249 = 693²).

The spelling of 2118361 in words is "two million, one hundred eighteen thousand, three hundred sixty-one".