2219181 has 8 divisors (see below), whose sum is σ = 3114720. Its totient is φ = 1401552.

The previous prime is 2219177. The next prime is 2219183. The reversal of 2219181 is 1819122.

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

It is not a de Polignac number, because 2219181 - 2² = 2219177 is a prime.

It is a super-2 number, since 2×2219181² = 9849528621522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219183) 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, 19410 + ... + 19523.

It is an arithmetic number, because the mean of its divisors is an integer number (389340).

2^2219181 is an apocalyptic number.

It is an amenable number.

2219181 is a deficient number, since it is larger than the sum of its proper divisors (895539).

2219181 is a wasteful number, since it uses less digits than its factorization.

2219181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38955.

The product of its digits is 288, while the sum is 24.

The square root of 2219181 is about 1489.6915788176. The cubic root of 2219181 is about 130.4360309494.

The spelling of 2219181 in words is "two million, two hundred nineteen thousand, one hundred eighty-one".