2489181 has 4 divisors (see below), whose sum is σ = 3318912. Its totient is φ = 1659452.

The previous prime is 2489161. The next prime is 2489183. The reversal of 2489181 is 1819842.

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 not a de Polignac number, because 2489181 - 2¹⁴ = 2472797 is a prime.

It is a super-2 number, since 2×2489181² = 12392044101522, which contains 22 as substring.

It is a D-number.

2489181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489183) 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, 414861 + ... + 414866.

It is an arithmetic number, because the mean of its divisors is an integer number (829728).

2^2489181 is an apocalyptic number.

It is an amenable number.

2489181 is a deficient number, since it is larger than the sum of its proper divisors (829731).

2489181 is an equidigital number, since it uses as much as digits as its factorization.

2489181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829730.

The product of its digits is 4608, while the sum is 33.

The square root of 2489181 is about 1577.7138523826. The cubic root of 2489181 is about 135.5248158322.

The spelling of 2489181 in words is "two million, four hundred eighty-nine thousand, one hundred eighty-one".