2118855 has 8 divisors (see below), whose sum is σ = 3390192. Its totient is φ = 1130048.

The previous prime is 2118841. The next prime is 2118871. The reversal of 2118855 is 5588112.

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 2118855 - 2⁶ = 2118791 is a prime.

It is a super-2 number, since 2×2118855² = 8979093022050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70614 + ... + 70643.

It is an arithmetic number, because the mean of its divisors is an integer number (423774).

2^2118855 is an apocalyptic number.

2118855 is a deficient number, since it is larger than the sum of its proper divisors (1271337).

2118855 is a wasteful number, since it uses less digits than its factorization.

2118855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141265.

The product of its digits is 3200, while the sum is 30.

The square root of 2118855 is about 1455.6287301369. The cubic root of 2118855 is about 128.4400341968.

The spelling of 2118855 in words is "two million, one hundred eighteen thousand, eight hundred fifty-five".