2181148 has 12 divisors (see below), whose sum is σ = 3948840. Its totient is φ = 1052912.

The previous prime is 2181139. The next prime is 2181149. The reversal of 2181148 is 8411812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9286 + ... + 9517.

It is an arithmetic number, because the mean of its divisors is an integer number (329070).

2^2181148 is an apocalyptic number.

It is an amenable number.

2181148 is a deficient number, since it is larger than the sum of its proper divisors (1767692).

2181148 is a wasteful number, since it uses less digits than its factorization.

2181148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18836 (or 18834 counting only the distinct ones).

The product of its digits is 512, while the sum is 25.

The square root of 2181148 is about 1476.8710167107. The cubic root of 2181148 is about 129.6865822648.

The spelling of 2181148 in words is "two million, one hundred eighty-one thousand, one hundred forty-eight".