2118819 has 8 divisors (see below), whose sum is σ = 2916352. Its totient is φ = 1366920.

The previous prime is 2118811. The next prime is 2118833. The reversal of 2118819 is 9188112.

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

It is not a de Polignac number, because 2118819 - 2³ = 2118811 is a prime.

It is a super-2 number, since 2×2118819² = 8978787909522, which contains 22 as substring.

It is a Duffinian number.

2118819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2118811) 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, 11299 + ... + 11484.

It is an arithmetic number, because the mean of its divisors is an integer number (364544).

2^2118819 is an apocalyptic number.

2118819 is a deficient number, since it is larger than the sum of its proper divisors (797533).

2118819 is a wasteful number, since it uses less digits than its factorization.

2118819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22817.

The product of its digits is 1152, while the sum is 30.

The square root of 2118819 is about 1455.6163642938. The cubic root of 2118819 is about 128.4393067807.

The spelling of 2118819 in words is "two million, one hundred eighteen thousand, eight hundred nineteen".