4492181 has 4 divisors (see below), whose sum is σ = 4534272. Its totient is φ = 4450092.

The previous prime is 4492171. The next prime is 4492193. The reversal of 4492181 is 1812944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4492181 is a prime.

It is a super-2 number, since 2×4492181² = 40359380273522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4492171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20885 + ... + 21098.

It is an arithmetic number, because the mean of its divisors is an integer number (1133568).

Almost surely, 2^4492181 is an apocalyptic number.

It is an amenable number.

4492181 is a deficient number, since it is larger than the sum of its proper divisors (42091).

4492181 is a wasteful number, since it uses less digits than its factorization.

4492181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42090.

The product of its digits is 2304, while the sum is 29.

The square root of 4492181 is about 2119.4765863297. The cubic root of 4492181 is about 165.0006856415. Note that the first 3 decimals are identical.

The spelling of 4492181 in words is "four million, four hundred ninety-two thousand, one hundred eighty-one".