2238181 has 8 divisors (see below), whose sum is σ = 2570400. Its totient is φ = 1927440.

The previous prime is 2238179. The next prime is 2238209. The reversal of 2238181 is 1818322.

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 2238181 - 2¹ = 2238179 is a prime.

It is a super-2 number, since 2×2238181² = 10018908377522, which contains 22 as substring.

It is a Duffinian number.

2238181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238161) 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, 5146 + ... + 5563.

It is an arithmetic number, because the mean of its divisors is an integer number (321300).

2^2238181 is an apocalyptic number.

It is an amenable number.

2238181 is a deficient number, since it is larger than the sum of its proper divisors (332219).

2238181 is a wasteful number, since it uses less digits than its factorization.

2238181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10739.

The product of its digits is 768, while the sum is 25.

The square root of 2238181 is about 1496.0551460424. The cubic root of 2238181 is about 130.8072257353.

The spelling of 2238181 in words is "two million, two hundred thirty-eight thousand, one hundred eighty-one".